45 lines
1.6 KiB
Java
45 lines
1.6 KiB
Java
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Writing Log Records Only After a Condition Occurs
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public static void main(String args[])
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{
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try {
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// Create a memory handler with a memory of 100 records
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// and dumps the records into the file my.log when a
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// SEVERE message is logged
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FileHandler fhandler = new FileHandler("my.log");
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int numRec = 100;
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MemoryHandler mhandler = new MemoryHandler(fhandler, numRec, Level.SEVERE);
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// Add to the desired logger
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Logger logger = Logger.getLogger("com.mycompany");
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logger.addHandler(mhandler);
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} catch (IOException e) {
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}
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try {
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// Create a memory handler with a memory of 100 records
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// and dumps the records into the file my.log when a
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// some abitrary condition occurs
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FileHandler fhandler = new FileHandler("my.log");
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int numRec = 100;
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MemoryHandler mhandler = new MemoryHandler(fhandler, numRec, Level.OFF) {
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public synchronized void publish(LogRecord record) {
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// Log it before checking the condition
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super.publish(record);
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boolean condition = false;
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if (condition) {
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// Condition occurred so dump buffered records
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push();
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}
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}
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};
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// Add to the desired logger
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Logger logger = Logger.getLogger("com.mycompany");
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logger.addHandler(mhandler);
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} catch (IOException e) {
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}
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}
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