Package org.jline.utils
Class Log
- java.lang.Object
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- org.jline.utils.Log
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public final class Log extends java.lang.Object
Internal logging utility for JLine components.The Log class provides a simple logging facility for JLine components, using Java's standard logging API (java.util.logging) under the hood. It offers methods for logging at various levels (trace, debug, info, warn, error) and supports both direct message logging and lazy evaluation through suppliers.
This class uses a single logger named "org.jline" for all JLine components. The actual log level can be configured through the standard Java logging configuration mechanisms, such as logging.properties files or programmatic configuration of the java.util.logging framework.
Key features include:
- Simple static methods for different log levels
- Support for multiple message objects that are concatenated
- Lazy evaluation of log messages using Supplier interfaces
- Automatic exception handling with stack trace logging
- Performance optimization to avoid string concatenation when logging is disabled
Example usage:
// Simple logging Log.debug("Processing command: ", command); // Logging with lazy evaluation Log.trace(() -> "Expensive computation result: " + computeResult()); // Logging exceptions try { // Some operation } catch (Exception e) { Log.error("Failed to process: ", e); }
- Since:
- 2.0
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Constructor Summary
Constructors Constructor Description Log()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static void
debug(java.lang.Object... messages)
static void
debug(java.util.function.Supplier<java.lang.String> supplier)
static void
error(java.lang.Object... messages)
static void
info(java.lang.Object... messages)
static boolean
isDebugEnabled()
static void
trace(java.lang.Object... messages)
static void
trace(java.util.function.Supplier<java.lang.String> supplier)
static void
warn(java.lang.Object... messages)
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Method Detail
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trace
public static void trace(java.lang.Object... messages)
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trace
public static void trace(java.util.function.Supplier<java.lang.String> supplier)
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debug
public static void debug(java.util.function.Supplier<java.lang.String> supplier)
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debug
public static void debug(java.lang.Object... messages)
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info
public static void info(java.lang.Object... messages)
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warn
public static void warn(java.lang.Object... messages)
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error
public static void error(java.lang.Object... messages)
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isDebugEnabled
public static boolean isDebugEnabled()
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