Java by API/java.util.logging/LogRecord

LogRecord: getLevel()

  
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
public class Main {
  private static Logger logger = Logger.getLogger("CustomHandler");
  private static List<String> strHolder = new ArrayList<String>();
  public static void main(String[] args) {
    logger.addHandler(new Handler() {
      public void publish(LogRecord logRecord) {
        strHolder.add(logRecord.getLevel() + ":");
        strHolder.add(logRecord.getSourceClassName() + ":");
        strHolder.add(logRecord.getSourceMethodName() + ":");
        strHolder.add("<" + logRecord.getMessage() + ">");
        strHolder.add("\n");
      }
      public void flush() {
      }
      public void close() {
      }
    });
    logger.warning("Logging Warning");
    logger.info("Logging Info");
    System.out.print(strHolder);
  }
}

LogRecord: getMessage()

  

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
public class Main {
  private static Logger logger = Logger.getLogger("CustomHandler");
  private static List<String> strHolder = new ArrayList<String>();
  public static void main(String[] args) {
    logger.addHandler(new Handler() {
      public void publish(LogRecord logRecord) {
        strHolder.add(logRecord.getLevel() + ":");
        strHolder.add(logRecord.getSourceClassName() + ":");
        strHolder.add(logRecord.getSourceMethodName() + ":");
        strHolder.add("<" + logRecord.getMessage() + ">");
        strHolder.add("\n");
      }
      public void flush() {
      }
      public void close() {
      }
    });
    logger.warning("Logging Warning");
    logger.info("Logging Info");
    System.out.print(strHolder);
  }
}

LogRecord: getSourceClassName()

  

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
public class Main {
  private static Logger logger = Logger.getLogger("CustomHandler");
  private static List<String> strHolder = new ArrayList<String>();
  public static void main(String[] args) {
    logger.addHandler(new Handler() {
      public void publish(LogRecord logRecord) {
        strHolder.add(logRecord.getLevel() + ":");
        strHolder.add(logRecord.getSourceClassName() + ":");
        strHolder.add(logRecord.getSourceMethodName() + ":");
        strHolder.add("<" + logRecord.getMessage() + ">");
        strHolder.add("\n");
      }
      public void flush() {
      }
      public void close() {
      }
    });
    logger.warning("Logging Warning");
    logger.info("Logging Info");
    System.out.print(strHolder);
  }
}

LogRecord: getSourceMethodName()

  

import java.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
public class Main {
  private static Logger logger = Logger.getLogger("CustomHandler");
  private static List<String> strHolder = new ArrayList<String>();
  public static void main(String[] args) {
    logger.addHandler(new Handler() {
      public void publish(LogRecord logRecord) {
        strHolder.add(logRecord.getLevel() + ":");
        strHolder.add(logRecord.getSourceClassName() + ":");
        strHolder.add(logRecord.getSourceMethodName() + ":");
        strHolder.add("<" + logRecord.getMessage() + ">");
        strHolder.add("\n");
      }
      public void flush() {
      }
      public void close() {
      }
    });
    logger.warning("Logging Warning");
    logger.info("Logging Info");
    System.out.print(strHolder);
  }
}

new LogRecord(Level level, String msg)

  
import java.util.logging.ConsoleHandler;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.Logger;
import java.util.logging.MemoryHandler;
public class Main {
  public static void main(String args[]) throws Exception {
    Logger logger = Logger.getLogger("your.logging");
    ConsoleHandler handler = new ConsoleHandler();
    MemoryHandler mHandler = new MemoryHandler(handler, 10, Level.ALL);
    logger.addHandler(mHandler);
    logger.setUseParentHandlers(false);
    LogRecord record1 = new LogRecord(Level.SEVERE, "This is SEVERE level message");
    LogRecord record2 = new LogRecord(Level.WARNING, "This is WARNING level message");
    logger.log(record1);
    logger.log(record2);
  }
}