Class IntBigLists.SynchronizedBigList

  • All Implemented Interfaces:
    BigList<java.lang.Integer>, IntBigList, IntCollection, IntIterable, Size64, java.io.Serializable, java.lang.Comparable<BigList<? extends java.lang.Integer>>, java.lang.Iterable<java.lang.Integer>, java.util.Collection<java.lang.Integer>
    Enclosing class:
    IntBigLists

    public static class IntBigLists.SynchronizedBigList
    extends java.lang.Object
    implements IntBigList, java.io.Serializable
    A synchronized wrapper class for big lists.
    See Also:
    Serialized Form
    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      boolean add​(int k)
      Ensures that this collection contains the specified element (optional operation).
      void add​(long i, int k)
      Inserts the specified element at the specified position in this type-specific big list (optional operation).
      void add​(long i, java.lang.Integer k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      boolean add​(java.lang.Integer k)
      Deprecated.
      boolean addAll​(long index, IntBigList l)
      Inserts all of the elements in the specified type-specific big list into this type-specific big list at the specified position (optional operation).
      boolean addAll​(long index, IntCollection c)
      Inserts all of the elements in the specified type-specific collection into this type-specific big list at the specified position (optional operation).
      boolean addAll​(long index, java.util.Collection<? extends java.lang.Integer> c)
      Inserts all of the elements in the specified collection into this big list at the specified position (optional operation).
      boolean addAll​(IntBigList l)
      Appends all of the elements in the specified type-specific big list to the end of this type-specific big list (optional operation).
      boolean addAll​(IntCollection c)
      Adds all elements of the given type-specific collection to this collection.
      boolean addAll​(java.util.Collection<? extends java.lang.Integer> c)  
      void addElements​(long index, int[][] a)
      Add (hopefully quickly) elements to this type-specific big list.
      void addElements​(long index, int[][] a, long offset, long length)
      Add (hopefully quickly) elements to this type-specific big list.
      void clear()  
      int compareTo​(BigList<? extends java.lang.Integer> o)  
      boolean contains​(int k)
      Returns true if this collection contains the specified element.
      boolean contains​(java.lang.Object k)
      Deprecated.
      boolean containsAll​(IntCollection c)
      Checks whether this collection contains all elements from the given type-specific collection.
      boolean containsAll​(java.util.Collection<?> c)  
      boolean equals​(java.lang.Object o)  
      void forEach​(java.util.function.IntConsumer action)
      Performs the given action for each element of this type-specific Iterable until all elements have been processed or the action throws an exception.
      java.lang.Integer get​(long i)
      Deprecated.
      Please use the corresponding type-specific method instead.
      void getElements​(long from, int[][] a, long offset, long length)
      Copies (hopefully quickly) elements of this type-specific big list into the given big array.
      int getInt​(long i)
      Returns the element at the specified position.
      int hashCode()  
      long indexOf​(int k)
      Returns the index of the first occurrence of the specified element in this type-specific big list, or -1 if this big list does not contain the element.
      long indexOf​(java.lang.Object o)
      Deprecated.
      Please use the corresponding type-specific method instead.
      IntIterator intIterator()
      Returns a primitive iterator on the elements of this collection.
      java.util.stream.IntStream intParallelStream()
      Return a parallel primitive stream over the elements, performing widening casts if needed.
      IntSpliterator intSpliterator()
      Returns a primitive spliterator on the elements of this collection.
      java.util.stream.IntStream intStream()
      Return a primitive stream over the elements, performing widening casts if needed.
      boolean isEmpty()  
      IntBigListIterator iterator()
      Returns a type-specific iterator on the elements of this collection.
      long lastIndexOf​(int k)
      Returns the index of the last occurrence of the specified element in this type-specific big list, or -1 if this big list does not contain the element.
      long lastIndexOf​(java.lang.Object o)
      Deprecated.
      Please use the corresponding type-specific method instead.
      IntBigListIterator listIterator()
      Returns a type-specific big-list iterator on this type-specific big list.
      IntBigListIterator listIterator​(long i)
      Returns a type-specific list iterator on this type-specific big list starting at a given index.
      java.util.stream.Stream<java.lang.Integer> parallelStream()
      Deprecated.
      boolean rem​(int k)
      Removes a single instance of the specified element from this collection, if it is present (optional operation).
      java.lang.Integer remove​(long i)
      Deprecated.
      Please use the corresponding type-specific method instead.
      boolean remove​(java.lang.Object k)
      Deprecated.
      boolean removeAll​(IntCollection c)
      Remove from this collection all elements in the given type-specific collection.
      boolean removeAll​(java.util.Collection<?> c)  
      void removeElements​(long from, long to)
      Removes (hopefully quickly) elements of this type-specific big list.
      boolean removeIf​(java.util.function.IntPredicate filter)
      Remove from this collection all elements which satisfy the given predicate.
      int removeInt​(long i)
      Removes the element at the specified position.
      boolean retainAll​(IntCollection c)
      Retains in this collection only elements from the given type-specific collection.
      boolean retainAll​(java.util.Collection<?> c)  
      int set​(long i, int k)
      Replaces the element at the specified position in this big list with the specified element (optional operation).
      java.lang.Integer set​(long index, java.lang.Integer k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      int size()  
      void size​(long size)
      Deprecated.
      long size64()
      Returns the size of this data structure as a long.
      IntSpliterator spliterator()
      Returns a type-specific spliterator on the elements of this collection.
      java.util.stream.Stream<java.lang.Integer> stream()
      Deprecated.
      IntBigList subList​(long from, long to)
      Returns a type-specific view of the portion of this type-specific big list from the index from, inclusive, to the index to, exclusive.
      java.lang.Object[] toArray()  
      int[] toArray​(int[] a)
      Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array.
      <T> T[] toArray​(T[] a)  
      int[] toIntArray()
      Returns a primitive type array containing the items of this collection.
      int[] toIntArray​(int[] a)
      Deprecated.
      java.lang.String toString()  
      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait
      • Methods inherited from interface it.unimi.dsi.fastutil.BigList

        size
      • Methods inherited from interface java.util.Collection

        addAll, clear, containsAll, isEmpty, removeAll, retainAll, toArray, toArray, toArray
    • Method Detail

      • set

        public int set​(long i,
                       int k)
        Description copied from interface: IntBigList
        Replaces the element at the specified position in this big list with the specified element (optional operation).
        Specified by:
        set in interface IntBigList
        See Also:
        BigList.set(long,Object)
      • add

        public void add​(long i,
                        int k)
        Description copied from interface: IntBigList
        Inserts the specified element at the specified position in this type-specific big list (optional operation).
        Specified by:
        add in interface IntBigList
        See Also:
        BigList.add(long,Object)
      • indexOf

        public long indexOf​(int k)
        Description copied from interface: IntBigList
        Returns the index of the first occurrence of the specified element in this type-specific big list, or -1 if this big list does not contain the element.
        Specified by:
        indexOf in interface IntBigList
        See Also:
        BigList.indexOf(Object)
      • lastIndexOf

        public long lastIndexOf​(int k)
        Description copied from interface: IntBigList
        Returns the index of the last occurrence of the specified element in this type-specific big list, or -1 if this big list does not contain the element.
        Specified by:
        lastIndexOf in interface IntBigList
        See Also:
        BigList.lastIndexOf(Object)
      • addAll

        public boolean addAll​(long index,
                              java.util.Collection<? extends java.lang.Integer> c)
        Description copied from interface: BigList
        Inserts all of the elements in the specified collection into this big list at the specified position (optional operation).
        Specified by:
        addAll in interface BigList<java.lang.Integer>
        Parameters:
        index - index at which to insert the first element from the specified collection.
        c - collection containing elements to be added to this big list.
        Returns:
        true if this big list changed as a result of the call
        See Also:
        List.addAll(int, Collection)
      • getElements

        public void getElements​(long from,
                                int[][] a,
                                long offset,
                                long length)
        Description copied from interface: IntBigList
        Copies (hopefully quickly) elements of this type-specific big list into the given big array.
        Specified by:
        getElements in interface IntBigList
        Parameters:
        from - the start index (inclusive).
        a - the destination big array.
        offset - the offset into the destination big array where to store the first element copied.
        length - the number of elements to be copied.
      • removeElements

        public void removeElements​(long from,
                                   long to)
        Description copied from interface: IntBigList
        Removes (hopefully quickly) elements of this type-specific big list.
        Specified by:
        removeElements in interface IntBigList
        Parameters:
        from - the start index (inclusive).
        to - the end index (exclusive).
      • addElements

        public void addElements​(long index,
                                int[][] a,
                                long offset,
                                long length)
        Description copied from interface: IntBigList
        Add (hopefully quickly) elements to this type-specific big list.
        Specified by:
        addElements in interface IntBigList
        Parameters:
        index - the index at which to add elements.
        a - the big array containing the elements.
        offset - the offset of the first element to add.
        length - the number of elements to add.
      • addElements

        public void addElements​(long index,
                                int[][] a)
        Description copied from interface: IntBigList
        Add (hopefully quickly) elements to this type-specific big list.
        Specified by:
        addElements in interface IntBigList
        Parameters:
        index - the index at which to add elements.
        a - the big array containing the elements.
      • size

        @Deprecated
        public void size​(long size)
        Deprecated.
        Description copied from interface: BigList
        Sets the size of this big list.

        If the specified size is smaller than the current size, the last elements are discarded. Otherwise, they are filled with 0/null/false.

        Specified by:
        size in interface BigList<java.lang.Integer>
        Parameters:
        size - the new size.
      • size64

        public long size64()
        Description copied from interface: Size64
        Returns the size of this data structure as a long.
        Specified by:
        size64 in interface Size64
        Returns:
        the size of this data structure.
      • iterator

        public IntBigListIterator iterator()
        Description copied from interface: IntCollection
        Returns a type-specific iterator on the elements of this collection.
        Specified by:
        iterator in interface java.util.Collection<java.lang.Integer>
        Specified by:
        iterator in interface IntBigList
        Specified by:
        iterator in interface IntCollection
        Specified by:
        iterator in interface IntIterable
        Specified by:
        iterator in interface java.lang.Iterable<java.lang.Integer>
        Returns:
        a type-specific iterator on the elements of this collection.
        See Also:
        Iterable.iterator()
      • listIterator

        public IntBigListIterator listIterator​(long i)
        Description copied from interface: IntBigList
        Returns a type-specific list iterator on this type-specific big list starting at a given index.
        Specified by:
        listIterator in interface BigList<java.lang.Integer>
        Specified by:
        listIterator in interface IntBigList
        Parameters:
        i - index of first element to be returned from the big-list iterator.
        Returns:
        a big-list iterator of the elements in this big list, starting at the specified position in this big list.
        See Also:
        BigList.listIterator(long)
      • subList

        public IntBigList subList​(long from,
                                  long to)
        Description copied from interface: IntBigList
        Returns a type-specific view of the portion of this type-specific big list from the index from, inclusive, to the index to, exclusive.
        Specified by:
        subList in interface BigList<java.lang.Integer>
        Specified by:
        subList in interface IntBigList
        Parameters:
        from - the starting element (inclusive).
        to - the ending element (exclusive).
        Returns:
        a big sublist view of this big list.
        See Also:
        BigList.subList(long,long)
      • equals

        public boolean equals​(java.lang.Object o)
        Specified by:
        equals in interface java.util.Collection<java.lang.Integer>
      • hashCode

        public int hashCode()
        Specified by:
        hashCode in interface java.util.Collection<java.lang.Integer>
      • compareTo

        public int compareTo​(BigList<? extends java.lang.Integer> o)
        Specified by:
        compareTo in interface java.lang.Comparable<BigList<? extends java.lang.Integer>>
      • addAll

        public boolean addAll​(long index,
                              IntCollection c)
        Description copied from interface: IntBigList
        Inserts all of the elements in the specified type-specific collection into this type-specific big list at the specified position (optional operation).
        Specified by:
        addAll in interface IntBigList
        See Also:
        List.addAll(int,java.util.Collection)
      • addAll

        public boolean addAll​(long index,
                              IntBigList l)
        Description copied from interface: IntBigList
        Inserts all of the elements in the specified type-specific big list into this type-specific big list at the specified position (optional operation).
        Specified by:
        addAll in interface IntBigList
        See Also:
        BigList.addAll(long,Collection)
      • addAll

        public boolean addAll​(IntBigList l)
        Description copied from interface: IntBigList
        Appends all of the elements in the specified type-specific big list to the end of this type-specific big list (optional operation).
        Specified by:
        addAll in interface IntBigList
        See Also:
        Collection.addAll(Collection)
      • add

        @Deprecated
        public void add​(long i,
                        java.lang.Integer k)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Inserts the specified element at the specified position in this big list (optional operation).
        Specified by:
        add in interface BigList<java.lang.Integer>
        Specified by:
        add in interface IntBigList
        Parameters:
        i - a position in the big list.
        k - an element to be inserted.
        See Also:
        List.add(int,Object)
      • get

        @Deprecated
        public java.lang.Integer get​(long i)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Returns the element at the specified position.
        Specified by:
        get in interface BigList<java.lang.Integer>
        Specified by:
        get in interface IntBigList
        Parameters:
        i - a position in the big list.
        Returns:
        the element at the specified position.
        See Also:
        List.get(int)
      • set

        @Deprecated
        public java.lang.Integer set​(long index,
                                     java.lang.Integer k)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Replaces the element at the specified position in this big list with the specified element (optional operation).
        Specified by:
        set in interface BigList<java.lang.Integer>
        Specified by:
        set in interface IntBigList
        Parameters:
        index - a position in the big list.
        k - the element to be stored at the specified position.
        Returns:
        the element previously at the specified positions.
        See Also:
        List.set(int,Object)
      • remove

        @Deprecated
        public java.lang.Integer remove​(long i)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Removes the element at the specified position.
        Specified by:
        remove in interface BigList<java.lang.Integer>
        Specified by:
        remove in interface IntBigList
        Parameters:
        i - a position in the big list.
        Returns:
        the element previously at the specified position.
        See Also:
        List.remove(int)
      • indexOf

        @Deprecated
        public long indexOf​(java.lang.Object o)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Returns the index of the first occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
        Specified by:
        indexOf in interface BigList<java.lang.Integer>
        Specified by:
        indexOf in interface IntBigList
        Parameters:
        o - the object to search for.
        Returns:
        the index of the first occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
        See Also:
        List.indexOf(Object)
      • lastIndexOf

        @Deprecated
        public long lastIndexOf​(java.lang.Object o)
        Deprecated.
        Please use the corresponding type-specific method instead.
        Returns the index of the last occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
        Specified by:
        lastIndexOf in interface BigList<java.lang.Integer>
        Specified by:
        lastIndexOf in interface IntBigList
        Parameters:
        o - the object to search for.
        Returns:
        the index of the last occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
        See Also:
        List.lastIndexOf(Object)
      • add

        public boolean add​(int k)
        Description copied from interface: IntCollection
        Ensures that this collection contains the specified element (optional operation).
        Specified by:
        add in interface IntCollection
        See Also:
        Collection.add(Object)
      • contains

        public boolean contains​(int k)
        Description copied from interface: IntCollection
        Returns true if this collection contains the specified element.
        Specified by:
        contains in interface IntCollection
        See Also:
        Collection.contains(Object)
      • rem

        public boolean rem​(int k)
        Description copied from interface: IntCollection
        Removes a single instance of the specified element from this collection, if it is present (optional operation).

        Note that this method should be called remove(), but the clash with the similarly named index-based method in the List interface forces us to use a distinguished name. For simplicity, the set interfaces reinstates remove().

        Specified by:
        rem in interface IntCollection
        See Also:
        Collection.remove(Object)
      • size

        public int size()
        Specified by:
        size in interface java.util.Collection<java.lang.Integer>
      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Collection<java.lang.Integer>
      • toIntArray

        public int[] toIntArray()
        Description copied from interface: IntCollection
        Returns a primitive type array containing the items of this collection.
        Specified by:
        toIntArray in interface IntCollection
        Returns:
        a primitive type array containing the items of this collection.
        See Also:
        Collection.toArray()
      • toArray

        public java.lang.Object[] toArray()
        Specified by:
        toArray in interface java.util.Collection<java.lang.Integer>
      • toIntArray

        @Deprecated
        public int[] toIntArray​(int[] a)
        Deprecated.
        Description copied from interface: IntCollection
        Returns a primitive type array containing the items of this collection.

        Note that, contrarily to Collection.toArray(Object[]), this methods just writes all elements of this collection: no special value will be added after the last one.

        Specified by:
        toIntArray in interface IntCollection
        Parameters:
        a - if this array is big enough, it will be used to store this collection.
        Returns:
        a primitive type array containing the items of this collection.
        See Also:
        Collection.toArray(Object[])
      • toArray

        public int[] toArray​(int[] a)
        Description copied from interface: IntCollection
        Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array.

        Note that, contrarily to Collection.toArray(Object[]), this methods just writes all elements of this collection: no special value will be added after the last one.

        Specified by:
        toArray in interface IntCollection
        Parameters:
        a - if this array is big enough, it will be used to store this collection.
        Returns:
        a primitive type array containing the items of this collection.
        See Also:
        Collection.toArray(Object[])
      • addAll

        public boolean addAll​(IntCollection c)
        Description copied from interface: IntCollection
        Adds all elements of the given type-specific collection to this collection.
        Specified by:
        addAll in interface IntCollection
        Parameters:
        c - a type-specific collection.
        Returns:
        true if this collection changed as a result of the call.
        See Also:
        Collection.addAll(Collection)
      • containsAll

        public boolean containsAll​(IntCollection c)
        Description copied from interface: IntCollection
        Checks whether this collection contains all elements from the given type-specific collection.
        Specified by:
        containsAll in interface IntCollection
        Parameters:
        c - a type-specific collection.
        Returns:
        true if this collection contains all elements of the argument.
        See Also:
        Collection.containsAll(Collection)
      • removeAll

        public boolean removeAll​(IntCollection c)
        Description copied from interface: IntCollection
        Remove from this collection all elements in the given type-specific collection.
        Specified by:
        removeAll in interface IntCollection
        Parameters:
        c - a type-specific collection.
        Returns:
        true if this collection changed as a result of the call.
        See Also:
        Collection.removeAll(Collection)
      • retainAll

        public boolean retainAll​(IntCollection c)
        Description copied from interface: IntCollection
        Retains in this collection only elements from the given type-specific collection.
        Specified by:
        retainAll in interface IntCollection
        Parameters:
        c - a type-specific collection.
        Returns:
        true if this collection changed as a result of the call.
        See Also:
        Collection.retainAll(Collection)
      • add

        @Deprecated
        public boolean add​(java.lang.Integer k)
        Deprecated.
        Description copied from interface: IntCollection
        Specified by:
        add in interface java.util.Collection<java.lang.Integer>
        Specified by:
        add in interface IntCollection
      • contains

        @Deprecated
        public boolean contains​(java.lang.Object k)
        Deprecated.
        Description copied from interface: IntCollection
        Specified by:
        contains in interface java.util.Collection<java.lang.Integer>
        Specified by:
        contains in interface IntCollection
      • remove

        @Deprecated
        public boolean remove​(java.lang.Object k)
        Deprecated.
        Description copied from interface: IntCollection
        Specified by:
        remove in interface java.util.Collection<java.lang.Integer>
        Specified by:
        remove in interface IntCollection
      • intIterator

        public IntIterator intIterator()
        Description copied from interface: IntCollection
        Returns a primitive iterator on the elements of this collection.

        This method is identical to IntCollection.iterator(), as the type-specific iterator is already compatible with the JDK's primitive iterators. It only exists for compatibility with the other primitive types' Collections that have use for widened iterators.

        Specified by:
        intIterator in interface IntCollection
        Specified by:
        intIterator in interface IntIterable
        Returns:
        a primitive iterator on the elements of this collection.
      • intSpliterator

        public IntSpliterator intSpliterator()
        Description copied from interface: IntCollection
        Returns a primitive spliterator on the elements of this collection.

        This method is identical to IntCollection.spliterator(), as the type-specific spliterator is already compatible with the JDK's primitive spliterators. It only exists for compatibility with the other primitive types' Collections that have use for widened spliterators.

        Specified by:
        intSpliterator in interface IntCollection
        Specified by:
        intSpliterator in interface IntIterable
        Returns:
        a primitive spliterator on the elements of this collection.
      • intStream

        public java.util.stream.IntStream intStream()
        Description copied from interface: IntCollection
        Return a primitive stream over the elements, performing widening casts if needed.
        Specified by:
        intStream in interface IntCollection
        Returns:
        a primitive stream over the elements.
        See Also:
        Collection.stream(), IntStream
      • intParallelStream

        public java.util.stream.IntStream intParallelStream()
        Description copied from interface: IntCollection
        Return a parallel primitive stream over the elements, performing widening casts if needed.
        Specified by:
        intParallelStream in interface IntCollection
        Returns:
        a parallel primitive stream over the elements.
        See Also:
        Collection.parallelStream(), IntStream
      • toArray

        public <T> T[] toArray​(T[] a)
        Specified by:
        toArray in interface java.util.Collection<java.lang.Integer>
      • spliterator

        public IntSpliterator spliterator()
        Description copied from interface: IntCollection
        Returns a type-specific spliterator on the elements of this collection.

        See Collection.spliterator() for more documentation on the requirements of the returned spliterator.

        Specified by:
        spliterator in interface java.util.Collection<java.lang.Integer>
        Specified by:
        spliterator in interface IntCollection
        Specified by:
        spliterator in interface IntIterable
        Specified by:
        spliterator in interface java.lang.Iterable<java.lang.Integer>
        Returns:
        a type-specific spliterator on the elements of this collection.
      • stream

        @Deprecated
        public java.util.stream.Stream<java.lang.Integer> stream()
        Deprecated.
        Description copied from interface: IntCollection
        Specified by:
        stream in interface java.util.Collection<java.lang.Integer>
        Specified by:
        stream in interface IntCollection
      • parallelStream

        @Deprecated
        public java.util.stream.Stream<java.lang.Integer> parallelStream()
        Deprecated.
        Description copied from interface: IntCollection
        Specified by:
        parallelStream in interface java.util.Collection<java.lang.Integer>
        Specified by:
        parallelStream in interface IntCollection
      • forEach

        public void forEach​(java.util.function.IntConsumer action)
        Description copied from interface: IntIterable
        Performs the given action for each element of this type-specific Iterable until all elements have been processed or the action throws an exception.
        Specified by:
        forEach in interface IntIterable
        Parameters:
        action - the action to be performed for each element.
        See Also:
        Iterable.forEach(java.util.function.Consumer)
      • addAll

        public boolean addAll​(java.util.Collection<? extends java.lang.Integer> c)
        Specified by:
        addAll in interface java.util.Collection<java.lang.Integer>
      • containsAll

        public boolean containsAll​(java.util.Collection<?> c)
        Specified by:
        containsAll in interface java.util.Collection<java.lang.Integer>
      • removeAll

        public boolean removeAll​(java.util.Collection<?> c)
        Specified by:
        removeAll in interface java.util.Collection<java.lang.Integer>
      • retainAll

        public boolean retainAll​(java.util.Collection<?> c)
        Specified by:
        retainAll in interface java.util.Collection<java.lang.Integer>
      • removeIf

        public boolean removeIf​(java.util.function.IntPredicate filter)
        Description copied from interface: IntCollection
        Remove from this collection all elements which satisfy the given predicate.
        Specified by:
        removeIf in interface IntCollection
        Parameters:
        filter - a predicate which returns true for elements to be removed.
        Returns:
        true if any elements were removed.
        See Also:
        Collection.removeIf(java.util.function.Predicate)
      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Collection<java.lang.Integer>
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object