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()
