31 lines
875 B
Java
31 lines
875 B
Java
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//: logging/SimpleFilter.java
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import java.util.logging.*;
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public class SimpleFilter {
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private static Logger logger =
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Logger.getLogger("SimpleFilter");
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static class Duck {};
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static class Wombat {};
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static void sendLogMessages() {
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logger.log(Level.WARNING,
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"A duck in the house!", new Duck());
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logger.log(Level.WARNING,
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"A Wombat at large!", new Wombat());
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}
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public static void main(String[] args) {
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sendLogMessages();
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logger.setFilter(new Filter() {
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public boolean isLoggable(LogRecord record) {
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Object[] params = record.getParameters();
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if(params == null)
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return true; // No parameters
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if(record.getParameters()[0] instanceof Duck)
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return true; // Only log Ducks
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return false;
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}
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});
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logger.info("After setting filter..");
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sendLogMessages();
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}
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} ///:~
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