Java: How to get a class object of the current class from a static context?

Question

I have a logging function that takes the calling object as a parameter. I then call getClass().getSimpleName() on it so that I can easily get the class name to add to my log en

Answer 1

Wouldn't implementing some sort of Singleton do what you need?

public class LogUtility {

    private final String loggingFrom;
    private static LogUtility instance;

    public static LogUtility getLogger() {
        if(instance == null)
            this.instance = new LogUtility();
        StackTraceElement [] s = new RuntimeException().getStackTrace();
        this.instance.setLoggingFrom(s[1].getClassName())
        return this.instance;
    }

    private LogUtility() {}

    private void setLoggingFrom(String loggingClassName){
        this.loggingFrom = loggingClassName;
    }

    public void log( String message ) {
        System.out.println( loggingFrom + message );
    }
}

Usage (anywhere in your project):

LogUtility.getLogger().log("Message");