GUI全称Graphical User Interfaces,意为图形用户户界面,又称为图形用户接口.,GUI指的就是采用图形方式显示的计算机操作用户界面,
GUI核心技术:Swing、AWT
为什么不用:
为什么我们要学习?
import java.awt.*; public class TestFrame { public static void main(String[] args){ //Frame Frame frame = new Frame("我的第一个java图形界面窗口"); //设置可见性 frame.setVisible(true); //设置窗口大小 frame.setSize(400,400); //设置背景颜色 Color frame.setBackground(Color.yellow); //弹出的初始位置 frame.setLocation(200,200); //设置大小固定 frame.setResizable(false); } }
窗口无法关闭;停止java程序运行
public class TestFrame2 { public static void main(String[] args) { MyFrame myFrame1 = new MyFrame(100, 100, 200, 200, Color.cyan); MyFrame myFrame2 = new MyFrame(300, 100, 200, 200,Color.green); MyFrame myFrame3 = new MyFrame(100, 300, 200, 200,Color.red); MyFrame myFrame4 = new MyFrame(300, 300, 200, 200,Color.yellow); } } class MyFrame extends Frame { static int id = 0;//可能存在多个窗口,我们需要要给计数器。 public MyFrame(int x,int y,int w,int h,Color color){ super("demo+"+(++id)); //id自增 setVisible(true); setBounds(x,y,w,h); setBackground(color); } }
Panel 可以看成是一个空间,但是不能单独存在。
import java.awt.*; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class TestPanle { public static void main(String[] args) { Frame frame= new Frame (); //布局的概念 Panel panel = new Panel(); //设置布局 frame.setLayout(null); //坐标 frame.setBounds(300,300,500,500); frame.setBackground(Color.lightGray); //设置坐标,先对于frame panel.setBounds(50,50,400,400); panel.setBackground(new Color(15, 193, 101)); //frame.add(panel);添加panel frame.add(panel); frame.setVisible(true); //监听实践,监听窗口关闭 System,exit(0); //适配器模式 frame.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { super.windowClosing(e); //结束程序 System.exit(0); } }); } }
监听实践,监听窗口关闭 System,exit(0);
//监听实践,监听窗口关闭 System,exit(0); //适配器模式 frame.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { super.windowClosing(e); //结束程序 System.exit(0); } });
frame.setLayout()
import java.awt.*; public class TestFlowLayoout { public static void main(String[] args) { Frame frame = new Frame(); //组件-按钮 Button button1 = new Button("button1"); Button button2 = new Button("button2"); Button button3 = new Button("button3"); //设置为流式布局 frame.setLayout(new FlowLayout()); //默认居中 // frame.setLayout(new FlowLayout(FlowLayout.CENTER));// 居中 // frame.setLayout(new FlowLayout(FlowLayout.LEFT));// 左 // frame.setLayout(new FlowLayout(FlowLayout.RIGHT));// 右 frame.setSize(200, 200); //添加按钮 frame.add(button1); frame.add(button2); frame.add(button3); frame.setVisible(true); } }
import java.awt.*; public class TestLayoout { public static void main(String[] args) { Frame frame = new Frame("TestBorderLayout"); Button button1 = new Button("East"); Button button2 = new Button("west"); Button button3 = new Button("south"); Button button4 = new Button("north"); Button button5 = new Button("center"); //添加东西南北中效果 frame.add(button1,BorderLayout.EAST); frame.add(button2,BorderLayout.WEST); frame.add(button3,BorderLayout.SOUTH); frame.add(button4,BorderLayout.NORTH); frame.add(button5,BorderLayout.CENTER); frame.setSize(500,500); frame.setBackground(Color.MAGENTA); frame.setVisible(true); } }
package awt; import java.awt.*; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class TestPanle { public static void main(String[] args) { Frame frame = new Frame("TestBorderLayout"); Button btn1 = new Button("btn1"); Button btn2 = new Button("btn2"); Button btn3 = new Button("btn3"); Button btn4 = new Button("btn4"); Button btn5= new Button("btn5"); Button btn6= new Button("btn6"); frame.setLayout(new GridLayout(3,2)); frame.add(btn1); frame.add(btn2); frame.add(btn3); frame.add(btn4); frame.add(btn5); frame.add(btn6); frame.pack();//java函数 自动布局 frame.setVisible(true); } }
package awt; import java.awt.*; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class TestPanle { public static void main(String[] args) { //总窗 Frame frame = new Frame(); frame.setLayout(new GridLayout(2,1)); frame.setBounds(400,300,300,400); frame.setBackground(Color.green); frame.setVisible(true); //四个面板 Panel p1 = new Panel(new BorderLayout()); Panel p2 = new Panel(new GridLayout(2,1)); Panel p3 = new Panel(new BorderLayout()); Panel p4 = new Panel(new GridLayout(2,2)); //按钮 //上面 p1.add(new Button("East-1"),BorderLayout.EAST); p1.add(new Button("West-1"),BorderLayout.WEST); p2.add(new Button("p2-btn-1")); p2.add(new Button("p2-btn-2")); p1.add(p2,BorderLayout.CENTER); //下面 p3.add(new Button("East-2"),BorderLayout.EAST); p3.add(new Button("West-2"),BorderLayout.WEST); for (int i = 0; i < 4; i++) { p4.add(new Button("p4-btn-"+i)); } p3.add(p4,BorderLayout.CENTER); //放入面板 frame.add(p1); frame.add(p3); //设置监听 frame.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { super.windowClosing(e); System.exit(0); } }); } }