The getFilter() method of the Logger class is used to get the current filter for this Logger instance. A Filter is useful to filter out log messages. we can say that filter decide the message gets logged or not. Filters are represented by the Java interface java.util.logging.Filter
Syntax:
public Filter getFilter()
Parameters: This method accepts do not accepts any parameter.
Return value: This method returns the current filter for this Logger.
Below programs illustrate the getFilter() method:
Program 1:
// Java program to demonstrate // Logger.getFilter() method import java.util.logging.*;
import java.io.IOException;
public class GFG {
public static void main(String[] args)
throws SecurityException, IOException
{
// create a logger
Logger logger = Logger.getLogger( "com.core" );
// set a new filter
logger.setFilter( new Filter() {
@Override
public boolean isLoggable(LogRecord record)
{
return true ;
}
});
// get Filter
Filter filter = logger.getFilter();
// check filter is null or not by printing
System.out.println( "Filter = " + filter);
}
} |
Output:
The output printed on eclipse IDE is shown below-
Program 2:
// Java program to demonstrate // Logger.getFilter() method import java.util.logging.*;
import java.io.IOException;
public class GFG {
public static void main(String[] args)
throws SecurityException, IOException
{
// create a logger
Logger logger
= Logger.getLogger( "com.javacode.core" );
// set a new filter
logger.setFilter( new MyFilter());
// get Filter
Filter filter = logger.getFilter();
// check filter is null or not by printing
System.out.println( "Filter = " + filter);
}
} class MyFilter implements Filter {
public boolean isLoggable(LogRecord record)
{
return false ;
}
} |
Output:
The output printed on eclipse IDE is shown below-
Reference: https://docs.oracle.com/javase/10/docs/api/java/util/logging/Logger.html#getFilter()