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khsthomas/App.java

Forked from artem-smotrakov/App.java
Created April 21, 2025 08:05
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Getting a caller's class name in Java with Thread.currentThread().getStackTrace()
Raw
App.java
public class App {
public static void main(String[] args) throws Throwable {
Logger.INSTANCE.log("started");
Logger.INSTANCE.log("hello");
foo();
Logger.INSTANCE.log("finished");
}
private static void foo() {
Logger.INSTANCE.log("hello from foo");
}
private static class Logger extends SecurityManager {
public static final Logger INSTANCE = new Logger();
public void log(String message) {
StackTraceElement ste = Thread.currentThread().getStackTrace()[2];
String callerClass = ste.getClassName();
String callerMethod = ste.getMethodName();
System.out.printf("[%s, %s]: %s%n", callerClass, callerMethod, message);
}
}
}
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