Question

java中如何输出文字到textField中

import javax.swing.text.JTextComponent; import java.io.*; import javax.swing.*; import javax.swing.event.*; import java.awt.*; import java.awt.event.*; import java.awt.BorderLayout; public class Division extends JFrame implements ActionListener{ JPanel panel1 = new JPanel(); JPanel panel2 = new JPanel(); JPanel panel3 = new JPanel(); JLabel pin = new JLabel("Please Input the Numbers:"); JLabel ds = new JLabel("/"); JLabel rs = new JLabel("="); JTextField txt1 = new JTextField("divisor",10); JTextField txt2 = new JTextField("dividend",10); JTextField txt3 = new JTextField("result",10); JButton btn1 = new JButton("Ok"); JButton btn2 = new JButton("Cancel"); BorderLayout layout = new BorderLayout(); public Division(){ try{ jbInit(); pack(); }catch(Exception e){ e.printStackTrace(); } } public void jbInit() throws Exception{ btn1.setActionCommand("ok"); btn1.addActionListener(this); btn2.setActionCommand("cancel"); btn2.addActionListener(this); t...

Answer 1

把你的result改成result+""
因为setText(" ");里面是需要接收一个String 类型的参数