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如何用java编写一个简单的文本编辑器?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class f1 extends Frame implements ActionListener
{
private MenuBar menubar=new MenuBar();
private Menu filemenu=new Menu("文件");
private Menu editmenu=new Menu("编辑");
private Menu formmenu=new Menu("格式");
private MenuItem[] itemf=new MenuItem[4];
private MenuItem[] iteme=new MenuItem[6];
private MenuItem[] items=new MenuItem[2];
private TextArea tf=new TextArea();
public int a=0,b=0,c=0,style=Font.PLAIN,size=15;
public String s1="red:"+a+" "+"green:"+b+" "+"blue"+c,
s2="宋体";
public String[] sz1={"10","16","24","30","32","36"},
sz2={"宋体","黑体","幼圆","隶书","行楷","Arial","Georgia"},
sz3={"粗体","倾斜","常规","粗斜"};
JDialog dialog=new JDialog(this,"字体",true);
Container cp=dialog.getContentPane();
JLabel[] lb=new JLabel[8];
JLabel lb1=new JLabel(s1,JLabel.LEFT);
JButton b1=new JButton("确定"),
b2=new JButton("取消");
JComboBox jc1=new JComboBox(),
jc2=new JComboBox(),
jc3=new JComboBox();
JScrollBar jb1=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);
JScrollBar jb2=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);
JScrollBar jb3=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);
Java文本编辑器 查找与替换功能如何实现?
最简单的就是将文本内容作使用String处理
只替换一次 : String.replace("需要替换的字符串","替换的字符串")
替换所有匹配字符 : String.replaceAll("需要替换的字符串","替换的字符串")
replcaeAll支持使用正则表达式。
java文本编辑器FileEditor
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class f1 extends Frame implements ActionListener
{
private MenuBar menubar=new MenuBar();
private Menu filemenu=new Menu("文件");
private Menu editmenu=new Menu("编辑");
private Menu formmenu=new Menu("格式");
private MenuItem[] itemf=new MenuItem[4];
private MenuItem[] iteme=new MenuItem[6];
private MenuItem[] items=new MenuItem[2];
private TextArea tf=new TextArea();
public int a=0,b=0,c=0,style=Font.PLAIN,size=15;
public String s1="red:"+a+" "+"green:"+b+" "+"blue"+c,
s2="宋体";
public