PIbd-22_Petrushin_E.A._SelfPropelledArtilleryUnit_Hard/SelfPropelledArtilleryUnit.java

import javax.swing.*;

public class SelfPropelledArtilleryUnit {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            Form form = new Form();
            form.setSize(900, 500);
            form.setVisible(true);
        });
    }
}