我怎么做到这一点..
sendMessage("hi");sendMessage("bye");sendMessage("Test");是否必须使用Math.random()做一些事情?喜欢
if (Math.random() * 100 < 80) {
sendMessage("hi");
}
else if (Math.random() * 100 < 5) {
sendMessage("bye");
}
Run Code Online (Sandbox Code Playgroud) 我怎么会继续添加JLabel徘徊?就像当你将鼠标移到顶部时,JLabela和新图像会重叠.我知道如何使用按钮,但相同的技术不适用于JLabels.有人会引导我添加JLabel徘徊吗?拜托,谢谢.
package src;
import java.awt.Dimension;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
/*
* @Author - 0x29A
*
*
*/
public class Jframe {
public static void main(final String args[]) {
/*
* @Images
*/
final ImageIcon icon = new ImageIcon("Data/button.png");
final JLabel label = new JLabel(icon);
final ImageIcon icon1 = new ImageIcon("Data/button1.png");
final JLabel label1 = new JLabel(icon1);
final ImageIcon icon2 = new ImageIcon("Data/button2.png");
final JLabel label2 = new JLabel(icon2);
final ImageIcon …Run Code Online (Sandbox Code Playgroud)