實現窗口有好種方式
一是直接在代碼里面創建窗口再進行相應的添加控件
import javax.swing.*;
import java.util.concurrent.*;
public class HelloLabel{
public static void main(String[] args) throws Exception
{
JFrame frame=new JFrame("Hello Swing");
JLabel label=new JLabel("A label");
frame.add(label);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//設置關閉的事件
frame.setSize(300,100);//設置大小
frame.setVisible(true);//使窗口可視
TimeUnit.SECONDS.sleep(1);//計時器，停頓一秒
label.setText("Hey! This is Different!");
}
}
二、是繼承JFrame接口然后在用構造方法進行布局
import javax.swing.*;
import java.util.concurrent.*;
public class SubmitSwingProgram extends JFrame{
JLabel label;
public SubmitSwingProgram(){
super("Hello Swing");
label=new JLabel("A Label");
add(label);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(300,100);
setVisible(true);
}
static SubmitSwingProgram ssp;
public static void main(String[] args) throws Exception
{
SwingUtilities.invokeLater(new Runnable(){
public void run(){ssp=new SubmitSwingProgram();}
});
TimeUnit.SECONDS.sleep(1);
SwingUtilities.invokeLater(new Runnable(){
public void run(){
ssp.label.setText("Hey! This is Different!");
}
});
}
}
布局方式：
BorderLayout將整個區域划分為一個部分，分別四個邊框區域和一個中央區域，直接利用重載add來進行添加
package Gui;
import javax.swing.*;
import java.awt.*;
import static net.mindview.util.SwingConsole.*;
public class BorderLayout1 extends JFrame{
public BorderLayout1(){
add(BorderLayout.NORTH,new JButton("North"));
add(BorderLayout.SOUTH,new JButton("SOUTH"));
add(BorderLayout.EAST,new JButton("EAST"));
add(BorderLayout.WEST,new JButton("WEST"));
add(BorderLayout.CENTER,new JButton("CENTER"));
}
public static void main(String[] args) {
run(new BorderLayout1(),300,250);
}
}
FlowLayout（流動）布局：
這個布局也是很好理解的，當你在添加控件的時候假設你當前的控件的大小超過可容納的區域大小會自動添加到下一行當中。
package Gui;
import javax.swing.*;
import java.awt.*;
import static net.mindview.util.SwingConsole.*;
public class FlowLayout1 extends JFrame{
public FlowLayout1(){
setLayout(new FlowLayout());
for(int i=0;i<20;i++)
add(new JButton("Button "+i));
}
public static void main(String[] args) {
run(new FlowLayout1(), 300, 300);
}
}
GridLayotu（表格）布局：
把當前的區域划分為N*M的表格，然后每一個控制占有一個單元格
package Gui;
import javax.swing.JButton;
import javax.swing.JFrame;
import java.awt.*;
import static net.mindview.util.SwingConsole.*;
public class GridLayout1 extends JFrame{
public GridLayout1(){
setLayout(new GridLayout(7,3));
for(int i=0;i<20;i++)
add(new JButton("Button "+i));
}
public static void main(String[] args) {
run(new GridLayout1(),300,300);
}
}
