JAVA 图形开发中组件对齐方法及界面开发

时间：2024-10-14 22:34:03

/*文章中用到的代码只是一部分，需要源码的可通过邮箱联系我 1978702969@qq.com*/

在上篇博客中提到了JAVA图形界面开发时的两种布局，流式布局和边框布局。

在实际使用中可能会发现，往容器中添加组件往往并不能得到想要的结果。比如想上下对齐两个组件，而流式布局是从左到右的，此时就很难实现上下对齐，此篇文章将介绍两个方法。

1.直接使用坐标贴图

　　如下面这个计算器的制作

　　JAVA 图形开发中组件对齐方法及界面开发

 package Graphic;

 import java.awt.BorderLayout;

 import java.awt.Dimension;

 import java.awt.FlowLayout;

 import javax.swing.JButton;

 import javax.swing.JFrame;

 import javax.swing.JLabel;

 import javax.swing.JPanel;

 import javax.swing.JTextField;

 public class Calculator {

     public static void main(String[] args) {

         Calculator login = new Calculator();

         login.Init();

     }

     public void Init()

     {

         String arr[] = {"1","2","3","4","5","6","7","8","9","0","+","-","*","/","="};

         JFrame frame = new JFrame();

         frame.setTitle("计算器");

         frame.setSize(600,400);

         frame.setLocationRelativeTo(null);

         frame.setDefaultCloseOperation(3);

         frame.setResizable(false);

         frame.setLayout(null);

         JTextField text1 = new     JTextField();

         text1.setBounds(40, 20, 400, 40);

         frame.add(text1);

         for(int i=0;i<9;i++)

         {

             JButton button = new JButton();

             button.setText(arr[i]);

             button.setBounds((i%3)*100+40, (i/3)*60+80, 80, 40);

             frame.add(button);

         }

         JButton button = new JButton();

         button.setText("0");

         button.setBounds(40, 260, 180, 40);

         frame.add(button);

         JButton button1 = new JButton();

         button1.setText(".");

         button1.setBounds(240, 260, 80, 40);

         frame.add(button1);

         for(int i=10;i<arr.length - 1;i++)

         {

             JButton button2 = new JButton();

             button2.setText(arr[i]);

             button2.setBounds(360, (i-10)*60+80, 80, 40);

             frame.add(button2);

         }

         JButton button2 = new JButton();

         button2.setText("x^2");

         button2.setBounds(460, 80, 80, 40);

         frame.add(button2);

         JButton button3 = new JButton();

         button3.setText("√x");

         button3.setBounds(460, 140, 80, 40);

         frame.add(button3);

         JButton button4 = new JButton();

         button4.setText("=");

         button4.setBounds(460, 200, 80, 100);

         frame.add(button4);

         frame.setVisible(true);

     }

 }

计算器

2.设置组件大小

　　下面这个界面的制作

　　JAVA 图形开发中组件对齐方法及界面开发

 package Graphic;

 import java.awt.BorderLayout;

 import java.awt.Dimension;

 import java.awt.FlowLayout;

 import javax.swing.ImageIcon;

 import javax.swing.JButton;

 import javax.swing.JCheckBox;

 import javax.swing.JFrame;

 import javax.swing.JLabel;

 import javax.swing.JPanel;

 import javax.swing.JPasswordField;

 import javax.swing.JTextField;

 public class Login1 {

     public static void main(String[] args) {

         // TODO Auto-generated method stub

         Login1 login = new Login1();

         login.Init();

     }

     public void Init()

     {

         JFrame frame = new JFrame();

         frame.setTitle("QQ");

         frame.setSize(430,330);

         frame.setLocationRelativeTo(null);

         frame.setDefaultCloseOperation(3);

         frame.setResizable(false);

         BorderLayout b1 = new BorderLayout();

         frame.setLayout(b1);

         //添加图片 北

         ImageIcon icon = new ImageIcon("C:\\Users\\long452a\\Desktop\\a1.jpg");

         JLabel labIcon = new JLabel(icon);

         frame.add(labIcon,BorderLayout.NORTH);

         //添加面板容器：账号、密码

         JPanel centerPanel = new JPanel();

         centerPanel.setLayout(new FlowLayout(FlowLayout.CENTER,10,5));    

         JLabel labName = new JLabel("账号:");

         labName.setHorizontalAlignment(JLabel.RIGHT);//这步很关键，通过设置右对齐的方式在前面补空

         labName.setPreferredSize(new Dimension(110,30));

         centerPanel.add(labName);

         JTextField textName = new JTextField();

         textName.setPreferredSize(new Dimension(180,30));

         centerPanel.add(textName);

         JLabel labPassowrd = new JLabel("密码 :");

         labPassowrd.setHorizontalAlignment(JLabel.RIGHT);

         labPassowrd.setPreferredSize(new Dimension(110,30));

         centerPanel.add(labPassowrd);

         JPasswordField textPassword = new JPasswordField();

         textPassword.setPreferredSize(new Dimension(180,30));

         centerPanel.add(textPassword,labPassowrd);

         JPanel centerPanel1 = new JPanel();

         centerPanel1.setLayout(new FlowLayout(FlowLayout.CENTER,5,5));

         JCheckBox rememberBox = new JCheckBox();

         rememberBox.setText("记住密码");

         rememberBox.setHorizontalAlignment(JLabel.RIGHT);

         rememberBox.setPreferredSize(new Dimension(140,30));

         centerPanel.add(rememberBox);

         JCheckBox rememberBox2 = new JCheckBox();

         rememberBox2.setText("自动登录");

         rememberBox2.setHorizontalAlignment(JLabel.RIGHT);

         rememberBox2.setPreferredSize(new Dimension(100,30));

         centerPanel.add(rememberBox2);

         JButton southButton = new JButton();

         southButton.setPreferredSize(new Dimension(120,40));

         southButton.setText("登录");

         centerPanel1.add(southButton);

         frame.add(centerPanel1, BorderLayout.SOUTH);

         frame.add(centerPanel,BorderLayout.CENTER);

         frame.setVisible(true);

     }

 }

QQ界面

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