Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.awt.Window;

import javax.swing.JFrame;

public class Main {
    public static JFrame getOnlyVisibleFrame() {
        JFrame f = null;
        for (Window w : Window.getWindows())
            if (w instanceof JFrame && w.isShowing()) {
                if (f != null)
                    throw new IllegalStateException("num frames > 1");
                f = (JFrame) w;
            }
        return f;
    }
}