怎样用java编写图形界面的Application程序
java编写图形界面拦凯碧需要用到swing等组件，可以在eclipse中安装windowbuilder来开发窗体，自动生成窗体代码孙顷，然后自己再根据需要修改，如：
package mainFrame;
import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
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;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
public class Mian_login extends JFrame {
private JPanel contentPane;
private JTextField text_LoginName;
private JPasswordField Login_password;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
Mian_login frame = new Mian_login();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Mian_login() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(500, 200, 443, 300);
setResizable(false);
setTitle("登 录");
/*获取系统按钮样简举式*/
String lookAndFeel = UIManager.getSystemLookAndFeelClassName();
try {
UIManager.setLookAndFeel(lookAndFeel);
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (InstantiationException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
e1.printStackTrace();
}
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JPanel panel = new JPanel();
panel.setOpaque(false);
panel.setBounds(0, 0, 434, 272);
contentPane.add(panel);
panel.setLayout(null);
JButton btn_Login = new JButton("\u767B\u5F55");
btn_Login.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
}
});
btn_Login.setBounds(88, 195, 70, 23);
panel.add(btn_Login);
JButton btn_cancel = new JButton("\u53D6\u6D88");
btn_cancel.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
dispose();
}
});
btn_cancel.setBounds(268, 195, 70, 23);
panel.add(btn_cancel);
JLabel lblNewLabel_name = new JLabel("\u7528\u6237\u540D");
lblNewLabel_name.setHorizontalAlignment(SwingConstants.CENTER);
lblNewLabel_name.setOpaque(true);
lblNewLabel_name.setBounds(88, 48, 70, 23);
panel.add(lblNewLabel_name);
JLabel lblNewLabel_passwd = new JLabel("\u5BC6\u7801");
lblNewLabel_passwd.setHorizontalAlignment(SwingConstants.CENTER);
lblNewLabel_passwd.setOpaque(true);
lblNewLabel_passwd.setBounds(88, 102, 70, 23);
panel.add(lblNewLabel_passwd);
JCheckBox chckbx_remember = new JCheckBox("\u8BB0\u4F4F\u5BC6\u7801");
chckbx_remember.setBounds(102, 150, 84, 23);
panel.add(chckbx_remember);
text_LoginName = new JTextField();
text_LoginName.setBounds(182, 48, 156, 23);
panel.add(text_LoginName);
text_LoginName.setColumns(10);
Login_password = new JPasswordField();
Login_password.setBounds(182, 102, 156, 23);
panel.add(Login_password);
JCheckBox chckbx_AutoLogin = new JCheckBox("\u81EA\u52A8\u767B\u5F55");
chckbx_AutoLogin.setBounds(233, 150, 84, 23);
panel.add(chckbx_AutoLogin);
JLabel Label_background = new JLabel("");
Label_background.setIcon(new ImageIcon("E:\\JAVA_workplace\\0002-\u754C\u9762\u8BBE\u8BA1\\images\\background3.jpg"));
Label_background.setBounds(0, 0, 437, 272);
contentPane.add(Label_background);
}
}
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class liangeran extends Frame implements ActionListener{
/**
* @param args
*/
TextField stringText;
TextField floatText;
TextArea textArea;
Button inputButton;
Button outputButton;
byte bytes[]=new byte[65560];
public liangeran(){
setTitle("历仿实现文本框的存取");
setSize(380,380);
setVisible(true);
setLayout(new FlowLayout());
setResizable(false);
setTextField();
setButton();
setTextArea();
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
validate();
}
private void setTextArea() {
textArea=new TextArea(15,45);
add(textArea);
}
private void setButton() {
inputButton=new Button("输入"高并);
outputButton=new Button("输出");
inputButton.addActionListener(this);
outputButton.addActionListener(this);
add(inputButton);
add(outputButton);
}
private void setTextField() {
stringText=new TextField("请输入字符串：",45);
floatText=new TextField("请输入浮点型数字：",45);
add(stringText);
add(floatText);
}
public static void main(String[] args) {
new liangeran();
}
public void actionPerformed(ActionEvent e) {
File myFile=new File("file.dat"肢念纤);
if(e.getSource()==inputButton){
String allText=stringText.getText()+"\n"+floatText.getText();
try{
FileOutputStream fileout=new FileOutputStream(myFile);
bytes=allText.getBytes();
fileout.write(bytes, 0, bytes.length);
}
catch(Exception exception){
System.out.println(exception.getMessage());
}
}
if(e.getSource()==outputButton){
try{
textArea.append(new String(bytes));
}
catch(Exception exception){
System.out.println(exception.getMessage());
}
}
}
}
注:这是从我同学那里的得到的源代码咯！
java编写图形界面需要用到swing等组件，可以在eclipse中安装windowbuilder来开发窗体，自动生成窗体代码租碰，然后自己再根据御型消需要修改，如：
package mainFrame;
import java.awt.EventQueue;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame。
Java是一门面向对象编程语言，不仅吸收了C++语言的各种优点，还摒弃了C++里难以理解的多继承、指针等概念，因此Java语言具有功能强大和简单易用两个特征。Java语言作为静态面向对象编程镇知语言的代表，极好地实现了面向对象理论，允许程序员以优雅的思维方式进行复杂的编程。
