窗口
public class JFrameDemo {
// inint();初始化
private void inint(){
// 顶级窗口
JFrame jf = new JFrame("这是一个JFrame窗口");
jf.setVisible(true);
jf.setBackground(Color.black);
jf.setBounds(100,100,200,200);
// 设置文字 Jlabel
JLabel label = new JLabel("欢迎来到王者荣耀");
jf.add(label);
// 容器实例化
// 关闭事件
jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
// 建议一个窗口
new JFrameDemo().inint();
}
}
弹窗(Dialog)
//主窗口
public class DialogDemo extends JFrame {
public DialogDemo() {
this.setVisible(true);
this.setSize(700, 500);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//关闭
// JFrame放东西 容器this.getContentPane();
Container container = this.getContentPane();
// 布局setLayout
// 绝对布局
container.setLayout(null);
// 按钮
JButton button = new JButton("点击弹出一个对话框");
button.setBounds(30,30,200,50);//按钮大小
// 点击这个按钮的时候弹出一个弹窗
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// 弹窗
new MyDialogDemo();
}
});
container.add(button);//把按钮放到容器中
}
public static void main(String[] args) {
new DialogDemo();
}
}
// 弹窗窗口
class MyDialogDemo extends JDialog{
public MyDialogDemo() {
this.setVisible(true);
this.setBounds(100,100,500,500);
// this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//默认关闭
Container container = this.getContentPane();
container.setLayout(null);
container.add(new Label("学习java"));
}
}
标签(lable)
图标ICON
//图标是一个接口,需要实现类 JFrame继承
public class IconDemo extends JFrame implements Icon {
private int width;
private int height;
public IconDemo(){};//无参构造
public IconDemo(int width,int height){
this.width = width;
this.height = height;
};//有参构造
// 初始化
public void inint(){
IconDemo iconDemo = new IconDemo(15,15);
//图片放在标签上,也可以放在按钮上
JLabel label = new JLabel("icontext", iconDemo, SwingConstants.CENTER);
Container container = getContentPane();//容器
container.add(label);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new IconDemo().inint();
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
g.fillOval(x,y,width,height);
}
@Override
public int getIconWidth() {
return this.width;
}
@Override
public int getIconHeight() {
return this.height;
}
}
图片 ICON
class ImageIconDemo extends JFrame {
public ImageIconDemo() {
JLabel label = new JLabel("ImageIcon");
// 获取图片的地址
URL url = ImageIconDemo.class.getResource("tx.jpg");
ImageIcon imageIcon = new ImageIcon(url);
label.setIcon(imageIcon);//设置图片
label.setHorizontalAlignment(SwingConstants.CENTER);//居中
Container container = getContentPane();//获得container 容器
container.add(label);//标签放到容器中
setVisible(true);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setBounds(100, 100, 800, 800);
}
public static void main(String[] args) {
new ImageIconDemo();
}
}
面板
public class JPanelDemo extends JFrame {
public JPanelDemo() {
Container container = this.getContentPane();//容器
container.setLayout(new GridLayout(2, 1, 10, 10));//后面参数的意思是间距
JPanel panel = new JPanel(new GridLayout(1,3));
panel.add(new JButton("1"));
panel.add(new JButton("1"));
panel.add(new JButton("1"));
this.setVisible(true);
this.setSize(500,500);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
container.add(panel);
}
public static void main(String[] args) {
new JPanelDemo();
}
}
JScrollPanel 滚动条
public class JScrollDemo extends JFrame {
public JScrollDemo() {
Container container = this.getContentPane();
// 文本域
JTextArea textArea = new JTextArea(20, 50);
textArea.setText("欢迎学习java");
// SCROLL面板
JScrollPane scrollPane = new JScrollPane(textArea);
container.add(scrollPane);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setBounds(100,100,500,300);
}
public static void main(String[] args) {
new JScrollDemo();
}
}
按钮
图片按钮
public class JButtonDemo01 extends JFrame {
public JButtonDemo01() {
Container container = this.getContentPane();
// 获取图片路径
// 把一个图片变成一个图片
URL resource = JButtonDemo01.class.getResource("tx.jpg");
ImageIcon icon = new ImageIcon(resource);
// 把这个图标放在按钮上
JButton button = new JButton();
button.setIcon(icon);
button.setToolTipText("图片按钮");
container.add(button);//把按钮加到容器中
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setBounds(100,100,500,500);
}
public static void main(String[] args) {
new JButtonDemo01();
}
}
单选按钮(JRadioButton)
public class JButtonDemo02 extends JFrame {
public JButtonDemo02() {
Container container = this.getContentPane();
// 单选框
JRadioButton radioButton1 = new JRadioButton("JRadioButton1");
JRadioButton radioButton2 = new JRadioButton("JRadioButton2");
JRadioButton radioButton3 = new JRadioButton("JRadioButton3");
//由于单选框只能选择一个,分组,一个组中只能选择一个
ButtonGroup group = new ButtonGroup();
group.add(radioButton1);
group.add(radioButton2);
group.add(radioButton3);
container.add(radioButton1,BorderLayout.CENTER);
container.add(radioButton2,BorderLayout.NORTH);
container.add(radioButton3,BorderLayout.SOUTH);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setBounds(100,100,500,500);
}
public static void main(String[] args) {
new JButtonDemo02();
}
}
复现按钮JCheckBox
public class JButtonDemo03 extends JFrame {
public JButtonDemo03() {
Container container = this.getContentPane();
//多选框
JCheckBox jCheckBox1 = new JCheckBox("JCheckBox1");
JCheckBox jCheckBox2 = new JCheckBox("JCheckBox2");
// 放到容器里
container.add(jCheckBox1,BorderLayout.NORTH);
container.add(jCheckBox2,BorderLayout.SOUTH);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setBounds(100,100,500,500);
}
public static void main(String[] args) {
new JButtonDemo03();
}
}
列表
下拉框 JComboBox
选择地区,或者一些单个选项
public class TestComboboxDemo01 extends JFrame {
public TestComboboxDemo01() {
Container container = this.getContentPane();
// status状态
JComboBox status = new JComboBox();
status.addItem(null);
status.addItem("正在热映");
status.addItem("已经下架");
status.addItem("即将上映");
container.add(status);
this.setSize(500, 300);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestComboboxDemo01();
}
}
列表框
列表,展示信息,一般是动态扩容的
public class TestComboboxDemo02 extends JFrame {
public TestComboboxDemo02() {
Container container = this.getContentPane();
// 生成列表的内容
String [] cotents = {"1","2","3"};
//列表中需要放内容 直接丢到构造器
JList jList = new JList(cotents);
container.add(jList);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setSize(500, 300);
}
public static void main(String[] args) {
new TestComboboxDemo02();
}
}
文本框
文本框JTextField
public class TestTextDemo01 extends JFrame {
public TestTextDemo01() {
Container container= this.getContentPane();
// 文本框
JTextField textField1 = new JTextField("hello");
JTextField textField2 = new JTextField("World",20);//默认20个
container.add(textField1,BorderLayout.NORTH);
container.add(textField2,BorderLayout.SOUTH);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setSize(500, 300) ;
}
public static void main(String[] args) {
new TestTextDemo01();
}
}
密码框JPasswordField
public class TestTextDemo02 extends JFrame {
public TestTextDemo02() {
Container container= this.getContentPane();
// 密码框
JPasswordField passwordField = new JPasswordField();//***
passwordField.setEchoChar('*');//替换
container.add(passwordField);
this.setVisible(true);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//关闭
this.setSize(500, 300) ;
}
public static void main(String[] args) {
new TestTextDemo02();
}
}
文本域
public class TestTextDemo03 extends JFrame {
public TestTextDemo03() {
Container container = this.getContentPane();
// 文本域
JTextArea textArea = new JTextArea(10,20);
textArea.setText("欢迎123123123");
// Scroll面板
JScrollPane scrollPane = new JScrollPane(textArea);
container.add(scrollPane);
this.setVisible(true);
this.setSize(500,300);
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new TestTextDemo03();
}
}