Print debugging statement: Difference between revisions
→{{header|Julia}}
Line 218:
value: &main.point{x:2, y:3}
</pre>
=={{header|Java}}==
<lang java>import java.util.Objects;
public class PrintDebugStatement {
/**
* Takes advantage of the stack trace to determine locality for the calling function
*
* @param message the message to print
*/
private static void printDebug(String message) {
Objects.requireNonNull(message);
RuntimeException exception = new RuntimeException();
StackTraceElement[] stackTrace = exception.getStackTrace();
// index 0 is this method, where the exception was created
// index 1 is the calling method, at the spot where this method was invoked
StackTraceElement stackTraceElement = stackTrace[1];
String fileName = stackTraceElement.getFileName();
String className = stackTraceElement.getClassName();
String methodName = stackTraceElement.getMethodName();
int lineNumber = stackTraceElement.getLineNumber();
System.out.printf("[DEBUG][%s %s.%s#%d] %s\n", fileName, className, methodName, lineNumber, message);
}
private static void blah() {
printDebug("Made It!");
}
public static void main(String[] args) {
printDebug("Hello world.");
blah();
Runnable oops = () -> printDebug("oops");
oops.run();
}
}</lang>
{{out}}
<pre>[DEBUG][PrintDebugStatement.java PrintDebugStatement.main#30] Hello world.
[DEBUG][PrintDebugStatement.java PrintDebugStatement.blah#26] Made It!
[DEBUG][PrintDebugStatement.java PrintDebugStatement.lambda$main$0#33] oops</pre>
=={{header|Julia}}==
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