锐客网

  1. 首页 > 生活百科 > it技术 > >

java图形代码 java图形界面设计代码

IT技术new

java图形界面代码解惑一般来说.比较常使用的是 JTextArea文本框的无参数构造器进行构造
然后可以使用setText("文字")来设置文本,或者getText()方法来获得文本
JTextArea jta = new JTextArea();
jta.setText("你好啊");
String txt = jta.getText();
具体例子
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
public class ReadBook extends JFrame{
JTextArea jta;
JTextField jtf;
JButton jb;
public ReadBook(){
jta = new JTextArea();
jtf = new JTextField(30);
jtf.setText("文件路径如c:\\ab.txt");
jb = new JButton("显示文字");
JPanel jp = new JPanel();
jp.add(jtf);
jp.add(jb);
add(jta);
add(jp,BorderLayout.SOUTH);
setBounds(500, 100, 500, 380);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
jb.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String path = jtf.getText();
File f= new File(path);
if(f.exists()!f.isDirectory()){//存在该文件且不是文件夹
try {
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader(new FileReader(f));
String temp;
while((temp=br.readLine())!=null){
sb.append(temp "\n");
}
br.close();
jta.setText(sb.toString());//setText方法可以给jta添加文字
} catch (Exception e1) {
e1.printStackTrace();
}
}else{
jtf.setText("路径错误.重新填写");
}
}
});
}
public static void main(String[] args) {
new ReadBook();
}
}
效果
JAVA的图形用户界面代码package hao;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.io.File;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
public class ChatPanel extends JPanel {
private static final long serialVersionUID = 1L;
JButton send,record,saveRecord,image;
JTextArea inputArea;
JTextPane text;//注意用法****************************************************************************
JComboBox fontName = null, fontSize = null, fontStyle = null, fontColor = null,fontBackColor = null;
publicStyledDocument doc = null; JScrollPane scrollPane;JPanel textChat;
JButton music;
public ChatPanel() {
setLayout(new BorderLayout());
text = new JTextPane();
text.setEditable(false);
doc = text.getStyledDocument();//跟踪文本和图片写到该区域的位置*************************************
scrollPane = new JScrollPane(text);
//注意下面对JComboBox的巧用***********************************************************************
String[] str_name = { "宋体", "黑体", "Dialog", "Gulim" };
String[] str_Size = { "12", "14", "18", "22", "30", "40" };
String[] str_Style = { "常规", "斜体", "粗体", "粗斜体" };
String[] str_Color = { "黑色", "红色", "蓝色", "黄色", "绿色" };
String[] str_BackColor = { "无色", "灰色", "淡红", "淡蓝", "淡黄", "淡绿" };
fontName = new JComboBox(str_name);
fontSize = new JComboBox(str_Size);
fontStyle = new JComboBox(str_Style);
fontColor = new JComboBox(str_Color);
fontBackColor = new JComboBox(str_BackColor);
fontName.setBackground(new Color(255,153,255));
fontSize.setBackground(new Color(255,153,255));
fontStyle.setBackground(new Color(255,153,255));
fontColor.setBackground(new Color(255,153,255));
fontBackColor.setBackground(new Color(255,153,255));
Box box = Box.createVerticalBox();//创建一个可以容纳多个Box组件的Box*******************************
Box box_1 = Box.createHorizontalBox();
Box box_2 = Box.createHorizontalBox();
Box box_4 = Box.createHorizontalBox();
box.add(box_1);
box.add(box_2);
box.add(box_4);
JLabel b1= new JLabel("字体~~"), b2 = new JLabel("样式~~"),b3 = new JLabel("字号~~"),b4 = new JLabel("颜色~~"),b5 = new JLabel("背景~~");
b1.setBackground(new Color(255,153,255));
b2.setBackground(new Color(255,153,255));
b3.setBackground(new Color(255,153,255));
b4.setBackground(new Color(255,153,255));
b5.setBackground(new Color(255,153,255));
box_1.add(b1);
box_1.add(fontName);
box_1.add(Box.createHorizontalStrut(8));
box_1.add(b2);
box_1.add(fontStyle);
box_1.add(Box.createHorizontalStrut(8));
box_1.add(b3);
box_1.add(fontSize);
box_2.add(Box.createHorizontalStrut(8));
box_2.add(b4);
box_2.add(fontColor);
box_2.add(Box.createHorizontalStrut(8));
box_4.add(b5);
box_4.add(fontBackColor);
textChat = new JPanel();
textChat.setLayout(new BorderLayout());
textChat.setBackground(new Color(255,153,255));
inputArea = new JTextArea(3, 20);
inputArea.setLineWrap(true);//设置文本区的换行策略 。88888*********************************
send = new JButton("发送");
record=new JButton("显示记录");
saveRecord=new JButton("储存记录");
image=new JButton("表情");
send.setBackground(new Color(255,153,255));
record.setBackground(new Color(255,153,255));
saveRecord.setBackground(new Color(255,153,255));
image.setBackground(new Color(255,153,255));
Box box_3 = Box.createHorizontalBox();
box_3.add(send);box_3.add(Box.createHorizontalStrut(8));//设置按钮间距*************************888
box_3.add(record);box_3.add(Box.createHorizontalStrut(8)); //设置按钮间距*************************888
box_3.add(saveRecord);box_3.add(Box.createHorizontalStrut(8));//设置按钮间距*************************888
box_3.add(image);
box.setBorder(BorderFactory.createLineBorder(new Color(102,102,0),5));//设置Box的边框线********************
box_3.setBorder(BorderFactory.createLineBorder(new Color(102,102,0),5));
textChat.add(box,BorderLayout.NORTH);
textChat.add(inputArea,BorderLayout.CENTER);
textChat.add(box_3, BorderLayout.SOUTH);
inputArea.requestFocus(true);
inputArea.setBorder(BorderFactory.createLineBorder(new Color(102,102,0),5));//设置输入窗口边框线*******************
text.setBorder(BorderFactory.createLineBorder(new Color(102,102,0),8));//设置输入窗口边框线*******************
JPanel audioPanel = new JPanel();//最上面的边框************************************************************************
audioPanel.setBackground(new Color(255,153,255));
audioPanel.setLayout(new GridLayout(1,1));
music = new JButton("想听就听");
music.setPreferredSize(new Dimension(320,50));
music.setBorder(BorderFactory.createLineBorder(Color.BLACK,10));//设置输入窗口边框线*******************
audioPanel.add(music);
add(audioPanel, BorderLayout.NORTH);
add(scrollPane,BorderLayout.CENTER);
add(textChat, BorderLayout.SOUTH);
}
void insertIcon(ImageIcon image) {
text.setCaretPosition(doc.getLength());
text.insertIcon(image);
insert(new MessageStyle());//?????????????????????????????????????????????????????????????????????????????/
}
public void insert(MessageStyle attrib) {
try {
doc.insertString(doc.getLength(), attrib.getText()"\n", attrib.getAttrSet());//写完后接着换行************
} catch (BadLocationException e) {
e.printStackTrace();
}
}
public MessageStyle getMessageStyle(String line) {
MessageStyle att = new MessageStyle();
att.setText(line);
att.setName((String) fontName.getSelectedItem());
att.setSize(Integer.parseInt((String) fontSize.getSelectedItem()));
String temp_style = (String) fontStyle.getSelectedItem();
if (temp_style.equals("常规")) {
att.setStyle(MessageStyle.GENERAL);
}
else if (temp_style.equals("粗体")) {
att.setStyle(MessageStyle.BOLD);
}
else if (temp_style.equals("斜体")) {
att.setStyle(MessageStyle.ITALIC);
}
else if (temp_style.equals("粗斜体")) {
att.setStyle(MessageStyle.BOLD_ITALIC);
}
String temp_color = (String) fontColor.getSelectedItem();
if (temp_color.equals("黑色")) {
att.setColor(new Color(0, 0, 0));
}
else if (temp_color.equals("红色")) {
att.setColor(new Color(255, 0, 0));
}
else if (temp_color.equals("蓝色")) {
att.setColor(new Color(0, 0, 255));
}
else if (temp_color.equals("黄色")) {
att.setColor(new Color(255, 255, 0));
}
else if (temp_color.equals("绿色")) {
att.setColor(new Color(0, 255, 0));
}
String temp_backColor = (String) fontBackColor.getSelectedItem();
if (!temp_backColor.equals("无色")) {
if (temp_backColor.equals("灰色")) {
att.setBackColor(new Color(200, 200, 200));
}
else if (temp_backColor.equals("淡红")) {
att.setBackColor(new Color(255, 200, 200));
}
else if (temp_backColor.equals("淡蓝")) {
att.setBackColor(new Color(200, 200, 255));
}
else if (temp_backColor.equals("淡黄")) {
att.setBackColor(new Color(255, 255, 200));
}
else if (temp_backColor.equals("淡绿")) {
att.setBackColor(new Color(200, 255, 200));
}
}
return att;
}
}
java图形界面代码import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
public class ReadBook extends JFrame {
JTextArea jta;
JTextField jtf;
JButton jb;
public ReadBook() {
jta = new JTextArea();
jtf = new JTextField(30);
jtf.setText("文件保存路径如c:\\ab.txt");
jb = new JButton("保存文字");
JPanel jp = new JPanel();
jp.add(jtf);
jp.add(jb);
add(jta);
add(jp, BorderLayout.SOUTH);
setBounds(500, 100, 500, 380);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
jb.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//-------------核心代码---------
String path = jtf.getText();
File f = new File(path);
String txt = jta.getText().replaceAll("\n", "\r\n");
try {
BufferedWriter bw = new BufferedWriter(new FileWriter(f));
bw.write(txt);//写入文件中
bw.close();
} catch (Exception e1) {
e1.printStackTrace();
}
//-------------核心代码---------
}
});
}
public static void main(String[] args) {
new ReadBook();
}
}
【java图形代码 java图形界面设计代码】java图形代码的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于java图形界面设计代码、java图形代码的信息别忘了在本站进行查找喔 。

    推荐阅读


    上一篇：数学课前展示公众号怎么写，数学公开课课前

    下一篇：模拟恋爱游戏下载安卓手机，模拟恋爱的游戏中文版