简单java运行出错

来源：百度知道 编辑：UC知道 时间：2024/06/03 16:09:38
package myprojects.testcardlayout;

import java.awt.*;
import java.awt.event.*;

class TestCardLayout extends Frame
{
CardLayout cl=new CardLayout();
Panel plCenter=new Panel();
public TestCardLayout()
{
Panel plWest=new Panel();
plWest.setLayout(new GirdLayout(3,1));
Button bthPrev=new Button("Prev");
Button bthNext=new Button("Next");
Button bthThree=new Button("Three");
plWest.add(btnPrev);
plWest.add(btnNext);
plWest.add(btnThree);

plCenter.setLayout();
plCenter.add(new Button("One"),"1");
plCenter.add(new Button("Two"),"2");
plCenter.add(new Button("Three"),"3");
plCenter.add(new Button("Four"),"4");
plCenter.add(new Button("Five"),"5");

class MyActionListener implements ActionListen

没什么问题只是打错几个字母，这个可以运行了：
import java.awt.Button;
import java.awt.CardLayout;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

class TestCardLayout extends Frame {
CardLayout cl = new CardLayout();
Panel plCenter = new Panel();

public TestCardLayout() {
Panel plWest = new Panel();
plWest.setLayout(new GridLayout(3, 1));
Button bthPrev = new Button("Prev");
Button bthNext = new Button("Next");
Button bthThree = new Button("Three");
plWest.add(bthPrev);
plWest.add(bthNext);
plWest.add(bthThree);

plCenter.setLayout(cl);
plCenter.add(new Button("One"), "1");
plCenter.add(new Button("Two"), "2")