# 1 楼答案 您可以使用Random();选择随机的jlabel和随机单词 import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import java.util.Random; import javax.swing.*; public class randomDAMN extends JFrame { randomDAMN() { JButton b1 = new JButton("Change"); JLabel l1 = new JLabel(); JLabel l2 = new JLabel(); JLabel l3 = new JLabel(); ArrayList<Object> o = new ArrayList<Object>(); String[] word1 = { "Why", "Damn", "Woah", "this", "hell", "question" }; Random r = new Random(); add(l1); add(l2); add(l3); add(b1); o.add(l1); o.add(l2); o.add(l3); b1.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub int selectLabel = r.nextInt(o.size()); int selecteditem = r.nextInt(word1.length); abc a = new abc(selectLabel, o, word1, selecteditem); a.ran(); } }); setSize(300, 300); setLayout(new GridLayout(4, 1)); setResizable(false); setLocationRelativeTo(null); setDefaultCloseOperation(EXIT_ON_CLOSE); setVisible(true); } public static void main(String[] args) { new randomDAMN(); } } class abc { int selectLabel; ArrayList<Object> o; String[] word1; int selecteditem; abc(int selectLabel, ArrayList<Object> o, String[] word1, int selecteditem) { this.selectLabel = selectLabel; this.o = o; this.word1 = word1; this.selecteditem = selecteditem; } void ran(){ ((JLabel) o.get(selectLabel)).setText(word1[selecteditem]); } }
# 1 楼答案
您可以使用
Random();
选择随机的jlabel和随机单词