Java Language Tutorial => Using the default logger

Example

This example shows how to use the default logging api.

import java.util.logging.Level;
import java.util.logging.Logger;

public class MyClass {
    
    // retrieve the logger for the current class
    private static final Logger LOG = Logger.getLogger(MyClass.class.getName());
    
    public void foo() {
        LOG.info("A log message");
        LOG.log(Level.INFO, "Another log message");

        LOG.fine("A fine message");
    
        // logging an exception
        try {
            // code might throw an exception
        } catch (SomeException ex) {
            // log a warning printing "Something went wrong"
            // together with the exception message and stacktrace
            LOG.log(Level.WARNING, "Something went wrong", ex);
        }

        String s = "Hello World!";

        // logging an object
        LOG.log(Level.FINER, "String s: {0}", s);

        // logging several objects
        LOG.log(Level.FINEST, "String s: {0} has length {1}", new Object[]{s, s.length()});
    }

}

PDF - Download Java Language for free

Previous Next

Java Language

Fastest Entity Framework Extensions

Example

Got any Java Language Question?

Java Language

Java Language Logging (java.util.logging) Using the default logger

Fastest Entity Framework Extensions

Example

Got any Java Language Question?