자바 setText 업데이트 질문이요

Question

Frame안에 Panel2개를 넣고 한 Panel에서 버튼을 누르면 다른 Panel의 JTextField값이 들어가도록 만들고 싶은데 업데이트가 안되네요 ㅠㅠ Mainpublic class Main { public static void main(String[] args) { new Frame1(); } } Frameimport javax.swing.*; import java.awt.*; import java.awt.event.*; public class Frame1 extends JFrame { public Frame1(){ setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLayout(new FlowLayout()); JPanel jp &#61; new JPanel(); Panel2 p &#61; new Panel2(); jp.add(p); Panel3 p3 &#61;new Panel3(); add(jp); add(p3); add(jp); setSize(500,500); setVisible(true); } } Panel2import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Panel2 extends JPanel { public Panel2() { setLayout(new FlowLayout()); JButton b&#61; new JButton(&#34;변신&#34;); Panel3 p3 &#61; new Panel3(); add(b); b.addActionListener(new ActionListener() { &#64;Override public void actionPerformed(ActionEvent e) { p3.setField(&#34;하이&#34;); } }); } } Panel3import java.awt.FlowLayout; import javax.swing.JPanel; import javax.swing.JTextField; public class Panel3 extends JPanel { JTextField j &#61; new JTextField(20); public Panel3() { setLayout(new FlowLayout()); add(j); } public void setField(String s) { j.setText(s); } }

커피집개발자 · Answer

ADD하기전에 이벤트줘보시겠어용?

자바 setText 업데이트 질문이요

1개의 답변

#settext 목록