Maximizes a frame; the iconified bit is not affected

    

import java.awt.Frame;

public class Main {
  public static void main(String[] argv) throws Exception {
    Frame frame = new Frame();

    frame.setSize(300, 300);
    frame.setVisible(true);

    maximize(frame);

  }

  public static void maximize(Frame frame) {
    int state = frame.getExtendedState();

    // Set the maximized bits
    state |= Frame.MAXIMIZED_BOTH;

    // Maximize the frame
    frame.setExtendedState(state);
  }
}

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Maximizes a frame; the iconified bit is not affected : Frame « Swing JFC « Java

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