java中點(diǎn)擊一個(gè)按鈕彈出兩個(gè)輸入文本框的源代碼

寫了一個(gè)很簡單的案例,可以參考和修改

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import?java.awt.BorderLayout;

import?java.awt.GridLayout;

import?java.awt.event.ActionEvent;

import?java.awt.event.ActionListener;

import?javax.swing.JButton;

import?javax.swing.JDialog;

import?javax.swing.JFrame;

import?javax.swing.JLabel;

import?javax.swing.JTextField;

public?class?FromeDemo?extends?JFrame{

JButton?jbutton;

public?FromeDemo()?{

jbutton?=?new?JButton("彈出2個(gè)文本框");

jbutton.addActionListener(new?ActionListener()?{

@Override

public?void?actionPerformed(ActionEvent?e)?{

JDialog?jd?=?new?JDialog();

jd.setBounds(320,?180,?260,?100);

jd.setTitle("彈出文本框");

jd.getContentPane().setLayout(new?GridLayout(2,?2));

jd.add(new?JLabel("文本框一"));

jd.add(new?JTextField(80));

jd.add(new?JLabel("文本框二"));

jd.add(new?JTextField(80));

jd.setModal(true);//確保彈出的窗口在其他窗口前面

jd.setVisible(true);

}

});

add(jbutton,BorderLayout.SOUTH);

setBounds(300,?100,?320,?320);

setTitle("測(cè)試");

setDefaultCloseOperation(EXIT_ON_CLOSE);

setVisible(true);

}

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

new?FromeDemo();

}

}

想設(shè)計(jì)一個(gè)java小程序，在文本框輸入一個(gè)數(shù)，然后每一秒＋1，求給完整代碼

package?com.demo;

import?java.awt.BorderLayout;

import?java.awt.Dimension;

import?java.awt.event.ActionEvent;

import?java.awt.event.ActionListener;

import?java.util.Timer;

import?java.util.TimerTask;

import?javax.swing.JButton;

import?javax.swing.JFrame;

import?javax.swing.JTextField;

public?class?TimerTest?{

private?Timer?timer;

private?JTextField?field;

private?JButton?button;

private?boolean?flag?=?true;

public?TimerTest()?{

timer?=?new?Timer();

addview();

}

private?void?addview()?{

JFrame?frame?=?new?JFrame("Timer?test");

field?=?new?JTextField();

field.setPreferredSize(new?Dimension(0,?30));

button?=?new?JButton("start");

button.setPreferredSize(new?Dimension(100,?30));

button.addActionListener(new?ActionListener()?{

@Override

public?void?actionPerformed(ActionEvent?e)?{

if?(flag)?{

auto();

flag?=?false;

button.setText("stop");

}?else?{

timer.cancel();

flag?=?true;

button.setText("start");

}

}

});

frame.add(field,?BorderLayout.CENTER);

frame.add(button,?BorderLayout.EAST);

frame.setBounds(200,?200,?300,?60);

frame.setVisible(true);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

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

new?TimerTest();

}

private?void?auto()?{

timer.schedule(new?TimerTask()?{

@Override

public?void?run()?{

int?num?=?Integer.parseInt(field.getText().trim());

num?+=?1;

field.setText(num?+?"");

auto();

}

},?1000);

}

}

JAVA一個(gè)窗體添加三個(gè)文本框具體怎么操作？

只要文本框添加監(jiān)聽即可，用ActionListener即會(huì)在文本框中按下回車鍵時(shí)觸發(fā)事件。

下面是監(jiān)聽的代碼：

public void actionPerformed(ActionEvent e)

{

Object o=e.getSource();

if(o==text1) //文本框一號(hào)

{

text2.requestFocus();//文本框2號(hào)，請(qǐng)求焦點(diǎn)

}

else if(o==text2)

{

text3.requestFocus();

}

}

程序如下：

import java.awt.FlowLayout;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JTextField;

public class MyFrame extends JFrame implements ActionListener

{

private JButton button;

private JTextField textField;

private JLabel label;

public MyFrame()

{

button = new JButton("Hello world");

textField = new JTextField(15);

label = new JLabel("輸入內(nèi)容：");

setTitle("Simple-Frame");

setBounds((Toolkit.getDefaultToolkit().getScreenSize().width - 500)/2,

(Toolkit.getDefaultToolkit().getScreenSize().height - 300)/2

, 500, 300);

setLayout(new FlowLayout());

add(label);

add(textField);

add(button);

setResizable(false);

setVisible(true);

this.button.addActionListener(this);

}

public static void main(String[] args)

{

new MyFrame();

}

@Override

public void actionPerformed(ActionEvent e)

{

if(e.getSource() == this.button)

{

this.textField.setText("Hello World");

}

}

}

怎么用java代碼實(shí)現(xiàn)將文本框輸入的內(nèi)容按照設(shè)計(jì)的排版格式

import java.awt.Color;

import java.awt.Graphics;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

import javax.imageio.IIOImage;

import javax.imageio.ImageIO;

import javax.imageio.ImageWriter;

import javax.imageio.stream.ImageOutputStream;

public class Ttex {

BufferedImage bi = new BufferedImage(300, 200, BufferedImage.TYPE_INT_RGB);

public Ttex(String text) {

Graphics gr = bi.createGraphics();

gr.setColor(Color.white);

gr.fillRect(0, 0, bi.getWidth(), bi.getHeight());

gr.setColor(Color.GRAY);

gr.drawString(text, 10, 10);

}

/**

* 根據(jù)地址來保存文件

*

* @param dir

* 文件地址

*/

private void Save(String dir) {

BufferedImage image = bi;

// 得到系統(tǒng)支持的圖片寫入器

Iterator it = ImageIO.getImageWritersBySuffix("jpg");

ImageWriter iw = null;

if (it.hasNext()) {

try {

ImageOutputStream imgOut = ImageIO

.createImageOutputStream(new File(dir));

iw = (ImageWriter) it.next();

iw.setOutput(imgOut);

IIOImage iioi = new IIOImage(image, null, null);

iw.write(iioi);

imgOut.close();

iw.dispose();

} catch (IOException e1) {

}

}

}

public static void main(String[] args) {

Ttex m = new Ttex("0123456789");

m.Save("D:/1.jpg");

}

}