java窗口布局的代码 java窗口布局的代码怎么用

java创建窗体时,两个文本输入框一个出错铺满了整个窗口,代码如下,请高人指点

JFrame的默认布局管理器是BorderLayout,有五个方向,TOP、LEFT、CENTER、RIGHT、BOTTOM,如果不给控件制定方向的话会都绘制到同一个默认方向CENTER,所以你最后添加的jf2把之前添加的组件都覆盖了,为每个组件指定方向即可。建议使用JPanel,使用FlowLayout。

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java图形界面的布局

没用过SWT的人路过,提供一个SWING:

窗口用JFrame(frame),布局为BorderLayout.

顶部为JLabel(labelTop),带图片和文字,用frame.add(labelTop, BorderLayout.NORTH)加入

左面为JPanel(panelLeft),布局为BoxLayout,参数Y_AXIS.需要在创建JPanel时设置Layout为NULL,然后再创建BoxLayout时需要把已经建立的panelLeft作为参数传进去,然后再设置panelLeft的Layout为那个BoxLayout。用frame.add(panelLeft, BorderLayout.WEST)加入

中间为一堆不同功能的JPanel,布局根据功能而定了,在点击按钮时,移除frame此时中间的panel(记录在一个自己的变量panelCenter里),然后加入按钮对应的panel,再把加入的panel存入变量panelCenter.

用java做一个窗口

java做窗口的话,需要用swing技术,之后创建JFrame 等组件,即可完成窗口创建工作。

package inter.frame;import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JOptionPane;public class MenuTest { /**

* @param args

*/

JFrame frame; //定义一个窗口架构

JMenuBar mb;//定义窗口的菜单工具栏

JMenu m; //定义菜单

JMenuItem mi1;//定义菜单的内容

JMenuItem mi2; //定义菜单的内容

public MenuTest() {

initFrame();

initAction();

}

public void initFrame() {

frame = new JFrame();

mb = new JMenuBar();

m = new JMenu("学生查询");

mi1 = new JMenuItem("确认");

mi2 = new JMenuItem("取消"); m.add(mi1);

m.add(mi2);

mb.add(m);

frame.add(mb, BorderLayout.NORTH);

frame.setSize(300, 300); //设置窗口大小

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置退出时关闭窗口

frame.setVisible(true);//设置窗口可见

} public void initAction() {

mi1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

// 具体实现代码根据实际要求填写

System.out.println("click");

JOptionPane.showMessageDialog(null, "你点击了确定按钮");

}

});

mi2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

// 具体实现代码根据实际要求填写

JOptionPane.showMessageDialog(null, "你点击了取消按钮");

}

});

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

new MenuTest();//执行菜单创建

}}

Java中怎么新建窗口?我是新手麻烦代码中主要语句解释一下

不知道是不是你说的窗口

使用javaswing JFrame设计窗口 + 布局就可实现,,如下例(添加了详细注释):

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextArea;

public class JFrameTest extends JFrame implements ActionListener {

private static final long serialVersionUID = -2829899643559384548L;

private JButton b1 = null;//按钮

private JTextArea jta = null;//文本

public JFrameTest() {

Container c = this.getContentPane();

c.setLayout(new BorderLayout());//设置布局方式,BorderLayout东西南北中布局

b1 = new JButton("点击");

b1.addActionListener(this);//为按钮添加监听

c.add(b1, BorderLayout.SOUTH);//添加按钮到c容器中,并分配在容器南(下)方

jta = new JTextArea();

c.add(jta, BorderLayout.CENTER);//添加文本区到c容器中,并分配在居中位置

this.setTitle("按钮事件");//设置窗口标题

this.setSize(300, 300);//设置窗体大小

this.setVisible(true);//窗体设置为显示

// this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//关闭窗体

//常用的一种关闭窗体的方法

this.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

}

public void actionPerformed(ActionEvent e) {

//使用判断按钮名称的方法触发事件

if("点击".equals(e.getActionCommand())) {

jta.setText("按钮被点击了!");

}

//也可以获取对象名实现判断

// if(e.getSource() == b1) {

// jta.setText("按钮使用getSource方法被点击了!");

// }

}

public static void main(String[] args) {

new JFrameTest();

}

}

急求Java窗体设计代码?我会追加分的

计算器:import java.awt.*;

import java.awt.event.*;

import java.awt.BorderLayout;

import javax.swing.JPanel;

import javax.swing.JFrame;

import java.awt.TextField;

import java.awt.Rectangle;

import java.awt.Button;

import java.awt.Label;public class suanfa extends JFrame {private static final long serialVersionUID = 1L;private JPanel jContentPane = null;private TextField textField = null;private TextField textField1 = null;private Button button = null;private Button button1 = null;private Button button2 = null;private Button button3 = null;private Label label = null;

double awn;

/**

* This is the default constructor

*/

public suanfa() {

super();

initialize();

}/**

* This method initializes this

*

* @return void

*/

private void initialize() {

this.setSize(300, 250);

this.setContentPane(getJContentPane());

this.setTitle("JFrame");

}/**

* This method initializes jContentPane

*

* @return javax.swing.JPanel

*/

private JPanel getJContentPane() {

if (jContentPane == null) {

label = new Label();

label.setBounds(new Rectangle(12, 129, 90, 27));

label.setText(String.format("%.6f",awn));

jContentPane = new JPanel();

jContentPane.setLayout(null);

jContentPane.add(getTextField(), null);

jContentPane.add(getTextField1(), null);

jContentPane.add(getButton(), null);

jContentPane.add(getButton1(), null);

jContentPane.add(getButton2(), null);

jContentPane.add(getButton3(), null);

jContentPane.add(label, null);

}

return jContentPane;

}/**

* This method initializes textField

*

* @return java.awt.TextField

*/

private TextField getTextField() {

if (textField == null) {

textField = new TextField();

textField.setBounds(new Rectangle(11, 20, 75, 32));

}

return textField;

}/**

* This method initializes textField1

*

* @return java.awt.TextField

*/

private TextField getTextField1() {

if (textField1 == null) {

textField1 = new TextField();

textField1.setBounds(new Rectangle(11, 67, 75, 32));

}

return textField1;

}/**

* This method initializes button

*

* @return java.awt.Button

*/

private Button getButton() {

if (button == null) {

button = new Button("加");

button.setBounds(new Rectangle(134, 17, 71, 29));

button.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

try{

awn=Double.valueOf(textField.getText()) + Double.valueOf(textField1.getText());

label.setText(String.format("%.6f",awn));

}

catch(Exception ex){

return;

}

}

});

}

return button;

}/**

* This method initializes button1

*

* @return java.awt.Button

*/

private Button getButton1() {

if (button1 == null) {

button1 = new Button("减");

button1.setBounds(new Rectangle(134, 52, 71, 29));

button1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

try{

awn=Double.valueOf(textField.getText()) - Double.valueOf(textField1.getText());

label.setText(String.format("%.6f",awn));

}

catch(Exception ex){

return;

}}

});

}

return button1;

}/**

* This method initializes button2

*

* @return java.awt.Button

*/

private Button getButton2() {

if (button2 == null) {

button2 = new Button("乘");

button2.setBounds(new Rectangle(134, 91, 71, 29));

button2.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

try{

awn=Double.valueOf(textField.getText()) * Double.valueOf(textField1.getText());

label.setText(String.format("%.6f",awn));

}

catch(Exception ex){

return;

}}

});

}

return button2;

}/**

* This method initializes button3

*

* @return java.awt.Button

*/

private Button getButton3() {

if (button3 == null) {

button3 = new Button("除");

button3.setBounds(new Rectangle(134, 133, 71, 29));

button3.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent e) {

try{

awn=Double.valueOf(textField.getText()) / Double.valueOf(textField1.getText());

label.setText(String.format("%.6f",awn));

}

catch(Exception ex){

return;

}}

});

}

return button3;

}

public static void main(String[] args)

{

new suanfa().setVisible(true);

}

}


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