java布局_java中Swing五种常见的布局方式

墨蓝 2022-11-01 13:42 161阅读 0赞

1、 边界布局(BorderLayout)

2、流式布局(FlowLayout)

3、网格布局(GridLayout)

4、盒子布局(BoxLaYout)

5、空布局(null)

还有其他两种布局，分别是GridBagLayout(网格包布局)、CardLayout(卡片布局)

注意：JFrame和JDialog默认布局为BorderLayout，JPanel和Applet默认布局为FlowLayout

边界布局示例代码：

import java.awt.BorderLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

public class BorderLayoutExample extends JFrame\{

JButton btn1=new JButton("东");

JButton btn2=new JButton("南");

JButton btn3=new JButton("西");

JButton btn4=new JButton("北");

JButton btn5=new JButton("中");

BorderLayoutExample()\{

init();

this.setTitle("边界布局");

this.setResizable(true);

this.setSize(200, 200);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT\_ON\_CLOSE);

this.setVisible(true);

void init()\{

this.setLayout(new BorderLayout(10,5)); //默认为0，0；水平间距10，垂直间距5

this.add(btn1,BorderLayout.EAST);

this.add(btn2,BorderLayout.SOUTH);

this.add(btn3,BorderLayout.WEST);

this.add(btn4,BorderLayout.NORTH);

this.add(btn5,BorderLayout.CENTER);

public static void main(String args\[\])\{

new BorderLayoutExample();

运行结果：

![201683607fe5fb8ad65326b4045dc49d.png][]

流式布局示例代码：

import java.awt.FlowLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

public class FlowLayoutExample extends JFrame\{

JButton btn1=new JButton("one");

JButton btn2=new JButton("two");

JButton btn3=new JButton("three");

JButton btn4=new JButton("four");

JButton btn5=new JButton("five");

FlowLayoutExample()\{

init();

this.setTitle("流式布局");

this.setResizable(true);

this.setSize(200, 200);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT\_ON\_CLOSE);

this.setVisible(true);

void init()\{

this.setLayout(new FlowLayout(FlowLayout.LEFT,10,5)); //默认为居中;水平间距10，垂直间距5

this.add(btn1);

this.add(btn2);

this.add(btn3);

this.add(btn4);

this.add(btn5);

public static void main(String args\[\])\{

new FlowLayoutExample();

运行结果：

![199bd5f0bb57794d028776470ddaff31.png][]

网格布局示例代码：

import java.awt.GridLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

public class GridLayoutExample extends JFrame\{

JButton btn1=new JButton("one");

JButton btn2=new JButton("two");

JButton btn3=new JButton("three");

JButton btn4=new JButton("four");

JButton btn5=new JButton("five");

GridLayoutExample()\{

init();

this.setTitle("表格布局");

this.setResizable(true);

this.setSize(300, 200);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT\_ON\_CLOSE);

this.setVisible(true);

void init()\{

this.setLayout(new GridLayout(2,3,10,5)); //默认为1行，n列；2行3列，水平间距10，垂直间距5

this.add(btn1);

this.add(btn2);

this.add(btn3);

this.add(btn4);

this.add(btn5);

public static void main(String args\[\])\{

new GridLayoutExample();

运行结果：

![ec3662c84d85717858181d12c8ed57bc.png][]

盒子布局示例代码：

import javax.swing.Box;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

public class BoxLaYoutExample extends JFrame\{

JButton btn1=new JButton("one");

JButton btn2=new JButton("two");

JButton btn3=new JButton("three");

JButton btn4=new JButton("four");

JButton btn5=new JButton("five");

BoxLaYoutExample()\{

init();

this.setTitle("表格布局");

this.setResizable(true);

this.setSize(300, 200);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT\_ON\_CLOSE);

this.setVisible(true);

void init()\{

this.setLayout(new BoxLayout(this.getContentPane(),BoxLayout.X\_AXIS));

//可以使用Box容器代替

//Box box = new Box(BoxLayout.Y\_AXIS);box.add(btn...);box.add(creat..);

this.add(btn1);

this.add(btn2);

this.getContentPane().add(Box.createHorizontalStrut(10)); //采用x布局时，添加固定宽度组件隔开

//this.getContentPane().add(Box.createVerticalStrut(5)); //采用y布局时，添加固定高度组件隔开

this.add(btn3);

this.add(btn4);

this.add(btn5);

public static void main(String args\[\])\{

new BoxLaYoutExample();

运行结果：

![8960cbf8aebce64f1db5720e0dca860c.png][]

空布局示例代码：

import javax.swing.JButton;

import javax.swing.JFrame;

public class NullLayoutExample extends JFrame\{

JButton btn1=new JButton("one");

JButton btn2=new JButton("two");

JButton btn3=new JButton("three");

JButton btn4=new JButton("four");

JButton btn5=new JButton("five");

NullLayoutExample()\{

init();

this.setTitle("空布局");

this.setResizable(true);

this.setSize(300, 300);

this.setLocationRelativeTo(null);

this.setDefaultCloseOperation(EXIT\_ON\_CLOSE);

this.setVisible(true);

void init()\{

this.setLayout(null);

btn1.setBounds(10, 0, 100, 50); //x坐标10，y坐标0，组件宽100，高50

btn2.setBounds(20, 50, 100, 50);

btn3.setBounds(30, 100, 100, 50);

btn4.setBounds(40, 150, 100, 50);

btn5.setBounds(50, 200, 100, 50);

this.add(btn1);

this.add(btn2);

this.add(btn3);

this.add(btn4);

this.add(btn5);

public static void main(String args\[\])\{

new NullLayoutExample();

运行结果：

![01a2af82f20417946d3652a92f4972b4.png][]

[201683607fe5fb8ad65326b4045dc49d.png]: /images/20221024/eece6816c8fb40b29cb80557f7011c13.png
[199bd5f0bb57794d028776470ddaff31.png]: /images/20221024/b24d83e7cd334ecea088b8e37929aaf1.png
[ec3662c84d85717858181d12c8ed57bc.png]: /images/20221024/6dc024ae1a25451eab28787099989019.png
[8960cbf8aebce64f1db5720e0dca860c.png]: /images/20221024/36a9f02f20e24a9eb3a19febea9a196a.png
[01a2af82f20417946d3652a92f4972b4.png]: /images/20221024/96f6671fd40a4940b6cecd1e3f864953.png