GUI
GUI
1、组件和容器
import java.awt.*;
/*
GUI第一个界面
*/
public class FrameTest01 {
public static void main(String[] args) {
//Frame窗口
Frame frame =new Frame("第一个GUI界面");
//设置可见性
frame.setVisible(true);
//设置长宽
frame.setSize(400,400);
//设置背景颜色
frame.setBackground(new Color(176, 58, 58));
//弹出的初始位置
frame.setLocation(100,200);
//设置大小固定
frame.setResizable(false);
}
}
问题：无法关闭，只能关闭程序！
2、面板Panel
public class PanelTest01 {
public static void main(String[] args) {
Frame frame = new Frame();
//布局的概念
Panel panel = new Panel();
frame.setLayout(null);
//窗口大小位置
frame.setBounds(100,100,500,500);
frame.setBackground(new Color(154, 15, 212, 255));
//面板的大小位置设置
panel.setBounds(50,50,400,400); //相对于窗口的位置
panel.setBackground(new Color(57, 190, 64));
//将面板放进窗口
frame.add(panel);
//将窗口可视化
frame.setVisible(true);
//监听事件
//适配器模式
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
//结束窗口
//0表示结束，1表示有异常的结束
System.exit(0);
}
});
}
}
3、布局管理器
-
流式布局
public class FlowLayoutTest01 {
public static void main(String[] args) {
Frame frame = new Frame();
//按钮
Button button1 = new Button("Button1");
Button button2 = new Button("Button2");
Button button3 = new Button("Button3");
//设置流式布局
frame.setLayout(new FlowLayout());
//窗口大小以及位置
frame.setBounds(200,200,400,400);
//将按钮添加到窗口
frame.add(button1);
frame.add(button2);
frame.add(button3);
//设置可视化
frame.setVisible(true);
}
} -
东南西北中
public class BorderLayoutTest01 {
public static void main(String[] args) {
Frame frame = new Frame("MyBorderLayout");
Button east = new Button("east");
Button west = new Button("west");
Button north = new Button("north");
Button south = new Button("south");
Button center = new Button("center");
frame.add(east,BorderLayout.EAST);
frame.add(west,BorderLayout.WEST);
frame.add(north,BorderLayout.NORTH);
frame.add(south,BorderLayout.SOUTH);
frame.add(center,BorderLayout.CENTER);
frame.setBounds(100,100,500,400);
frame.setVisible(true);
}
} -
表格布局
public class GridTest {
public static void main(String[] args) {
Frame frame = new Frame("MyBorderLayout");
Button button1 = new Button("button1");
Button button2 = new Button("button2");
Button button3 = new Button("button3");
Button button4 = new Button("button4");
Button button5 = new Button("button5");
Button button6 = new Button("button6");
frame.setLayout(new GridLayout(3,2));
frame.add(button1);
frame.add(button2);
frame.add(button3);
frame.add(button4);
frame.add(button5);
frame.add(button6);
frame.pack();//自动填充
frame.setVisible(true);
}
}
作业：
public class Test526 {
public static void main(String[] args) {
//主窗口分为两行一列的两个面板
Frame frame = new Frame("MyFrame");
frame.setLayout(new GridLayout(2,1));
//其中上面面板为东西中布局，中间面板为2行1列布局
Panel panel1 = new Panel(new BorderLayout());
Panel panel2 = new Panel(new GridLayout(2,1));
//下面面板同为东西中布局，中间面板为2行2列布局
Panel panel3 = new Panel(new BorderLayout());
Panel panel4 = new Panel(new GridLayout(2,2));
//将面板添加到窗口中
frame.add(panel1);
frame.add(panel2);
frame.add(panel3);
frame.add(panel4);
//为panel1添加组件
Button btn1 = new Button("btn1");
Button btn2 = new Button("btn2");
panel1.add(btn1,BorderLayout.WEST);
panel1.add(btn2,BorderLayout.EAST);
panel1.add(panel2,BorderLayout.CENTER);
//给panel2添加组件
Button btn3 = new Button("btn3");
Button btn4 = new Button("btn4");
panel2.add(btn3);
panel2.add(btn4);
//为panel3添加组件
Button btn5 = new Button("btn5");
Button btn6 = new Button("btn6");
panel3.add(btn5,BorderLayout.WEST);
panel3.add(btn6,BorderLayout.EAST);
panel3.add(panel4,BorderLayout.CENTER);
//给panel4添加组件
Button btn7 = new Button("btn7");
Button btn8 = new Button("btn8");
Button btn9 = new Button("btn9");
Button btn10 = new Button("btn10");
panel4.add(btn7);
panel4.add(btn8);
panel4.add(btn9);
panel4.add(btn10);
frame.pack();
frame.setVisible(true);
}
}
4、事件监听
public class ActionTest01 {
public static void main(String[] args) {
Frame frame = new Frame();
Button button = new Button("btn");
frame.setSize(400,500);
MyActionListener myActionListener = new MyActionListener();
button.addActionListener(myActionListener);
frame.add(button,BorderLayout.CENTER);
windowClose(frame);
// frame.pack();
frame.setVisible(true);
}
//关闭窗体的时间
public static void windowClose(Frame frame){
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
}
//事件监听
class MyActionListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("say hello");
}
}
5、输入框TextField
public class TextTest {
public static void main(String[] args) {
//启动
new MyFrame();
}
}
class MyFrame extends Frame{
public MyFrame(){
TextField textField = new TextField();
add(textField);
//监听文本框
MyActionListener02 myActionListener02 = new MyActionListener02();
//按下回车键，就会触发这个输入框的监听事件
textField.addActionListener(myActionListener02);
//设置替换编码
textField.setEchoChar('*');
pack();
setVisible(true);
}
}
class MyActionListener02 implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
TextField field=(TextField) e.getSource();//获得资源
System.out.println(field.getText());//获得文本框的文本
field.setText("");
}
}
6、简易计算器，组合+内部类
public class CalcTest {
public static void main(String[] args) {
new MyCalc().loadFrame();
}
}
class MyCalc extends Frame{
//属性
TextField num1,num2,num3;
//方法
public void loadFrame(){
num1 = new TextField(10);//字符数
num2 = new TextField(10);//字符数
num3 = new TextField(20);//字符数
Button button = new Button("=");
Label label = new Label("+");
button.addActionListener(new CalculatorActionListener());
//流式布局
setLayout(new FlowLayout());
add(num1);
add(label);
add(num2);
add(button);
add(num3);
pack();
setVisible(true);
}
private class CalculatorActionListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
//将文本框里的文本转换成int类型
int i1 = Integer.parseInt(num1.getText());
int i2 = Integer.parseInt(num2.getText());
//将结果放在第三个框
num3.setText(""+(i1+i2));
//清空num1，num2两个文本框
num1.setText("");
num2.setText("");
}
}
}
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