Java Swing 程序设计02

Posted 2021-06-10 xingweikun

文章目录

• 常用布局管理器
• • 绝对布局
  • 流布局管理器
  • 边界布局管理器
  • 网格布局管理器
• 常用面板
• • JPanel面板
  • JScrollPane面板

常用布局管理器

绝对布局

package swing;

import java.awt.*;

import javax.swing.*;

public class AbsolutePosition extends JFrame {
	public AbsolutePosition() {
		setTitle("本窗体使用绝对布局");
		setLayout(null);
		setBounds(0, 0, 200, 150);
		Container c = getContentPane();
		JButton b1 = new JButton("按钮1");
		JButton b2 = new JButton("按钮2");
		b1.setBounds(10, 30, 80, 30);
		b2.setBounds(60, 70, 100, 20);
		c.add(b1);
		c.add(b2);
		setVisible(true);
		setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

	}

	public static void main(String[] args) {
		new AbsolutePosition();

	}

}

流布局管理器

package swing;

import java.awt.*;
import javax.swing.*;

public class FlowLayoutPosition extends JFrame {
	public FlowLayoutPosition() {
		setTitle("本窗体使用流布局管理器");
		Container c = getContentPane();
		setLayout(new FlowLayout(2, 10, 10));
		for (int i = 0; i < 10; i++) {
			c.add(new JButton("button" + i));
		}
		setSize(300, 200);
		setVisible(true);
		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
	}

	public static void main(String[] args) {
		new FlowLayoutPosition();

	}

}

边界布局管理器

package swing;

import java.awt.*;
import javax.swing.*;

public class BorderLayoutPosition extends JFrame {
	String[] border = { BorderLayout.CENTER, BorderLayout.NORTH, BorderLayout.SOUTH, BorderLayout.WEST,
			BorderLayout.EAST };
	String[] buttonName = { "center button", "north button", "south button", "west button", "east button" };

	public BorderLayoutPosition() {
		setTitle("这个窗体使用边界布局管理器");
		Container container = getContentPane();
		setLayout(new BorderLayout());
		for (int i = 0; i < border.length; i++) {
			container.add(border[i], new JButton(buttonName[i]));
		}
		setSize(350, 200);
		setVisible(true);
		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
	}

	public static void main(String[] args) {
		new BorderLayoutPosition();

	}

}

网格布局管理器

package swing;

import java.awt.*;
import javax.swing.*;

public class GridLayoutPosition extends JFrame {

	public GridLayoutPosition() {
		Container c = getContentPane();
		setLayout(new GridLayout(7, 3, 5, 5));
		for (int i = 0; i < 20; i++) {
			c.add(new JButton("button" + i));
		}
		setSize(300, 300);
		setTitle("这是一个使用网格布局管理器的窗体");
		setVisible(true);
		setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
	}

	public static void main(String[] args) {

		new GridLayoutPosition();
	}

}

常用面板

JPanel面板

package swing;
import java.awt.*;
import javax.swing.*;
public class JPanelTest extends JFrame{
	public JPanelTest() {
		Container c=getContentPane();
		c.setLayout(new GridLayout(2,1,10,10));
		JPanel p1=new JPanel(new GridLayout(1,3,10,10));
		JPanel p2=new JPanel(new GridLayout(1,2,10,10));
		JPanel p3=new JPanel(new GridLayout(1,2,10,10));
		JPanel p4=new JPanel(new GridLayout(2,1,10,10));
		p1.add(new JButton("1")); // 在面板中添加按钮
		p1.add(new JButton("1"));
		p1.add(new JButton("2"));
		p1.add(new JButton("3"));
		p2.add(new JButton("4"));
		p2.add(new JButton("5"));
		p3.add(new JButton("6"));
		p3.add(new JButton("7"));
		p4.add(new JButton("8"));
		p4.add(new JButton("9"));
		c.add(p1); // 在容器中添加面板
		c.add(p2);
		c.add(p3);
		c.add(p4);
		setTitle("在这个窗体中使用了面板");
		setSize(420, 200);
		setVisible(true);
		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
		
	}
	public static void main(String[] args) {
		new JPanelTest();

	}

}

JScrollPane面板

package swing;

import java.awt.*;

import javax.swing.*;

public class JScrollPaneTest extends JFrame {

	public JScrollPaneTest() {
		Container c = getContentPane(); // 创建容器
		JTextArea ta = new JTextArea(20, 50); // 创建文本区域组件
		JScrollPane sp = new JScrollPane(ta); // 创建JScrollPane面板对象
		c.add(sp); // 将该面板添加到该容器中

		setTitle("带滚动条的文字编译器");
		setSize(200, 200);
		setVisible(true);
		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
	}

	public static void main(String[] args) {
		new JScrollPaneTest();

	}

}