JFrame不显示使用变量的宽度和高度

Question

import java.awt.Dimension;
import javax.swing.JFrame;

public class Window {

    public Window(int width, int height, String title){
        JFrame frame = new JFrame(title);
        frame.setPreferredSize(new Dimension(width,height));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

    }
}

public class Driver {
    private final static int WIDTH = 500, HEIGHT = 500;

    public static void main(String[] args) {
        new Window(WIDTH,HEIGHT,"Title");
    }

}

Answer 1

不要执行frame.setPreferredSize(new Dimension(width,height));，而是尝试这样做。

frame.setSize(width, height);

Answer 2

frame.setSize（宽度，高度）;

OR

如果你想使用 frame.setPrefferedSize（new Dimension（width，height））;

然后 您必须设置最小和最大尺寸

frame.setMinimumSize（new Dimension（width，height））;

frame.setMaximumSize（new Dimension（width，height））;