When we program Java window program code, we always encounter the problem that the running window is closed but the program does not exit, so today I will introduce how to solve it.
#What should I do if the java program does not exit?
The java program does not exit because when creating the program, the line of codesetDefaultCloseOperation(JFrame.EXIT-ON-CLOSE)is missing. This code means that when the user When the close button is clicked, the program exits.
The complete code is as follows:
// JFrameDemo1.java import javax.swing.*; //使用Swing类，必须引入Swing包 public class JFrameDemo1{ public staticvoid main( String args[]) { //定义一个窗体对象f，窗体名称为"一个简单窗口" Jframe f = new JFrame("一个简单窗口"); //设置窗体左上角与显示屏左上角的坐标， f.setLocation(300,300); //离显示屏上边缘300像素，里显示屏左边缘300像素 f.setSize(300,200); //设置窗体的大小为300*200像素大小 f.setResizable(false); //设置窗体是否可以调整大小，参数为布尔值 //设置窗体可见，没有该语句，窗体将不可见，此语句必须有，否则没有界面就没有如何意义了 f.setVisible( true); //用户单击窗口的关闭按钮时程序执行的操作 // ************** f.setDefaultCloseOperation(f.EXIT_ON_CLOSE); // ************** } }
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