Question

跪求，用java编写词法分析的原理及源代码

编制一个读单词过程，从输入的源程序中，识别出各个具有独立意义的单词，即基本保留字、标识符、常数、运算符、分隔符五大类。并依次输出各个单词的内部编码及单词符号自身值。（遇到错误时可显示“Error”，然后跳过错误部分继续显示）。

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Answer 1

//楼上傻
package a;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class fenxi extends JFrame implements ActionListener
{
private JTextArea ta1;
private JTextArea ta2;
private JButton jb=new JButton("词法分析");
private JButton jb1=new JButton("清空文本区");
private JLabel jl1=new JLabel("输入源代码：");
private JLabel jl2=new JLabel("分析结果：");
//保留字
String gj[]={"else","if","int","return","void","while"};
//运算符
String fh[]={"+","-","*","/戚锋","<","<=",">",">=","==","!=","=",";",",","(",")","["枯仔晌,"]","{","}"};
//初始化界面
public fenxi()
{
super("词法分析器");
this.setSize(600,448);
this.setLocation(200,150);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
JPanel jp =new JPanel();
JPanel jp1 =new JPanel();
jp.setSize(300, 400);
jp1.setSize(300, 400);
jp.setLocation(0, 0);
jp1.setLocation(300, 0);
jp.setLayout(null);
jp1.setLayout(null);
ta1=new JTextArea(20,30);
ta2=new JTextArea(20,30);
ta2.setEditable(false);
JScrollPane scrol1=new JScrollPane(ta1,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
JScrollPane scrol2=new JScrollPane(ta2,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrol1.setSize(260, 310);
scrol1.setLocation(18, 40);
scrol2.setSize(260, 310);
scrol2.setLocation(18, 40);
jp.add(scrol1);
jp1.add(scrol2);
jb.setBounds(80, 370, 100, 25);
jb1.setBounds(80, 370, 100, 25);
jl1.setFont(new Font("楷书",Font.BOLD,12));
jl1.setSize(140, 25);
jl1.setLocation(0, 0);
jl2.setFont(new Font("楷没锋书",Font.BOLD,12));
jl2.setSize(140, 25);
jl2.setLocation(0, 0);
jp.add(jb1);
jp.add(jl1);
jp1.add(jb);
jp1.add(jl2);
this.add(jp);
this.add(jp1);
jb.addActionListener(this);
jb1.addActionListener(this);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
//点击了“清空文本”区按钮
if(e.getSource()==jb1)
{
int a=JOptionPane.showConfirmDialog(null, "确定清空吗？","提示！",JOptionPane.YES_NO_OPTION);
//执行清空操作
if( a==JOptionPane.YES_OPTION)
{
ta1.setText("");
ta2.setText("");
}
}
//点击了“词法分析”分析按钮
if(e.getSource()==jb)
{
int m=0;//控制数组b的下标
int n=0;
float f;
String str[]=new String[20];
int c[]=new int[20];
for(int i=0;i<20;i++)
{
c[i]=i;
}
String str1 = new String();
//把你输入的软代码赋值给字符串变量a
String a=ta1.getText();
//把a中的字符一个一个放入字符数组b中
char[] b=new char[a.length()];
for(int i=0;i<a.length();i++)
b[i]=a.charAt(i);

while(m<a.length())
{
//已过时。由 isWhitespace(char) 取代。确定指定字符依据 Java 标准是否为空白字符。
if(Character.isSpace(b[m]))
{
m++;
}
//确定指定字符是否为数字
else if(Character.isDigit(b[m]))
{
boolean flag=false;
int mn=0;
int xy=0;
int ab=0;
while(m<a.length()&& !Character.isSpace(b[m])&& b[m]!='('&& b[m]!=')'&& b[m]!='+'&& b[m]!='*'&& b[m]!='/'&& b[m]!='>'&& b[m]!='<'&& b[m]!='='&& b[m]!=','&& b[m]!=';'|| ((m<a.length() && Character.isDigit(b[m]))||(m<a.length() && b[m]=='.')||(m<a.length() && Character.isLetter(b[m]))))
{
str1=str1+str1.valueOf(b[m]);
m++;
}
//判断是否是一个数字
for(int i=0;i<str1.length();i++)
{
if(str1.charAt(i)!='.'&& !Character.isDigit(str1.charAt(i)))
mn=1;
}
//mn为0则为数字（浮点或整数 分别翻译成十六进制 和 二进制）
if(mn==0)
{
for(int k=0;k<str1.length();k++)
{
if(str1.charAt(k)=='.')
flag=true;
}
if(flag)
{
f=Float.valueOf(str1);
ta2.setText(ta2.getText()+str1+"\t"+Float.toHexString(f)+"\n");
}
else
{
int x =Integer.valueOf(str1);
ta2.setText(ta2.getText()+x+"\t"+Integer.toBinaryString(x)+"\n");
}
}
//科学计算法 或是 非法字符
else
{
for(int i=0;i<str1.length();i++)
if(Character.isLetter(str1.charAt(i))||str1.charAt(i)=='-')
{
xy++;
ab=i;
}
if(xy==1 && str1.charAt(ab)=='e')
ta2.setText(ta2.getText()+str1+"\t"+"e"+str1+"\n");
else if(xy==2 && str1.charAt(ab)=='-' && str1.charAt(ab-1)=='e')
{
ta2.setText(ta2.getText()+str1+"\t"+"-e"+str1+"\n");
}
else
ta2.setText(ta2.getText()+str1+"\t"+"非法标志符"+"\n");
}
str1="";
}
//确定指定字符是否为字母。
else if(Character.isLetter(b[m]))
{
//不是结束符则继续(改正了定义数组时字符后面跟“[”)
while(m<a.length()&& !Character.isSpace(b[m])&& b[m]!='('&& b[m]!=')'&& b[m]!='+'&& b[m]!='-'&& b[m]!='*'&& b[m]!='/'&& b[m]!='>'&& b[m]!='<'&& b[m]!='='&& b[m]!=','&& b[m]!=';'&& b[m]!='[')
{
str1=str1+str1.valueOf(b[m]);
m++;
}
//gj是保留字
if(str1.equals(gj[0]))
ta2.setText(ta2.getText()+str1+"\t"+"41"+"\n");
else if(str1.equals(gj[1]))
ta2.setText(ta2.getText()+str1+"\t"+"42"+"\n");
else if(str1.equals(gj[2]))
ta2.setText(ta2.getText()+str1+"\t"+"43"+"\n");
else if(str1.equals(gj[3]))
ta2.setText(ta2.getText()+str1+"\t"+"44"+"\n");
else if(str1.equals(gj[4]))
ta2.setText(ta2.getText()+str1+"\t"+"45"+"\n");
else if(str1.equals(gj[5]))
ta2.setText(ta2.getText()+str1+"\t"+"46"+"\n");
//
else
{
int p=1;
for(int i=0;i<str1.length();i++)
{
if(!Character.isLetter(str1.charAt(i))&&!Character.isDigit(str1.charAt(i))&&str1.charAt(i)!='_')
p=0;//字符串不是字符或数字的话 就是非法字符(更正用下划线定义变量 但不能识别的错误)
}
if(p==1)
{
for(int j=0;n>0 && j<n;j++)
{
if( str1.equals(str[j]))
{
ta2.setText(ta2.getText()+str1+"\t"+c[j]+"\n");
str1="";
}
}
if(str1!="")
{
str[n]=str1;
ta2.setText(ta2.getText()+str1+"\t"+c[n]+"\n");
n++;
}
str1="";
}
else
{
ta2.setText(ta2.getText()+str1+"\t"+"非法标志符"+"\n");
}
}
str1="";
}
//
else if(b[m]=='+')
{
m++;
if(m<a.length() && Character.isDigit(b[m]))
{
while((m<a.length() && Character.isDigit(b[m]) )|| (m<a.length() && b[m]=='.'))
{
str1=str1+str1.valueOf(b[m]);
m++;
}
ta2.setText(ta2.getText()+"+"+str1+"\t"+"00"+str1+"\n");

}
else
{
if(m<a.length()&& b[m]=='+')
{
ta2.setText(ta2.getText()+"++"+"\t"+"47"+"\n");
m++;
}
else
{
m--;
ta2.setText(ta2.getText()+b[m]+"\t"+"21"+"\n");
m++;
}
}
str1="";
}
//
else if(b[m]=='-')
{
m++;
if(m<a.length() && Character.isDigit(b[m]))
{
while((m<a.length() && Character.isDigit(b[m]) )|| (m<a.length() && b[m]=='.'))
{
str1=str1+str1.valueOf(b[m]);
m++;
}
ta2.setText(ta2.getText()+"-"+str1+"\t"+"11"+str1+"\n");
}
else
{
if(m<a.length()&&b[m]=='-')
{
ta2.setText(ta2.getText()+"--"+"\t"+"48"+"\n");
m++;
}
else
{
m--;
ta2.setText(ta2.getText()+b[m]+"\t"+"22"+"\n");
m++;
}
}
str1="";
}
//
else if(b[m]=='*')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"23"+"\n");
m++;
}
//
else if(b[m]=='<')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{
str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"25"+"\n");
m++;
}
else
ta2.setText(ta2.getText()+str1+"\t"+"24"+"\n");
str1="";
}
//
else if(b[m]=='>')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"27"+"\n");
m++;
}
else ta2.setText(ta2.getText()+str1+"\t"+"26"+"\n");
str1="";
}
//
else if(b[m]=='=')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"29"+"\n");
m++;
}
else ta2.setText(ta2.getText()+str1+"\t"+"28"+"\n");
str1="";

}
//30,"=" 31,"!="
else if(b[m]=='!')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{
str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"31"+"\n");
m++;
}
else ta2.setText(ta2.getText()+str1+"\t"+"30"+"\n");
str1="";
}
//32
else if(b[m]==';')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"32"+"\n");
m++;
}
//33
else if(b[m]==',')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"33"+"\n");
m++;
}
//34
else if(b[m]=='(')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"34"+"\n");
m++;
}
//35
else if(b[m]==')')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"35"+"\n");
m++;
}
//36
else if(b[m]=='{')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"36"+"\n");
m++;
}
//37
else if(b[m]=='}')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"37"+"\n");
m++;
}
//38
else if(b[m]=='[')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"38"+"\n");
m++;
}
//39
else if(b[m]==']')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"39"+"\n");
m++;
}
//40
else if(b[m]=='/')
{
m++;
if(m<a.length() && b[m]=='*')
{
m++;
inner:
for(;true;)
{
label:
for(;b[m]!='*';)
{
m++;
for(;b[m]=='*';)
{
m++;
for(;b[m]!='/';)
{
continue label;
}
if(b[m]=='/')
m++;
break inner;
}
}
}
}
else
{
m--;
ta2.setText(ta2.getText()+b[m++]+"\t"+"40"+"\n");
}
}
//
else
{
ta2.setText(ta2.getText()+b[m]+"\t"+"非法字符"+"\n");
m++;
}
//全部检查完毕，一while循环
}

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

Answer 2

太跨，错误都没改过来。。。

Answer 3

//楼上傻
package a;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class fenxi extends JFrame implements ActionListener
{
private JTextArea ta1;
private JTextArea ta2;
private JButton jb=new JButton("词法分析");
private JButton jb1=new JButton("清空文本区");
private JLabel jl1=new JLabel("输入源代码：");
private JLabel jl2=new JLabel("分析结果：");
//保留字
String gj[]={"else","if","int","return","void","while"};
//运算符
String fh[]={"+","-","*","/戚锋","<","<=",">",">=","==","!=","=",";",",","(",")","["枯仔晌,"]","{","}"};
//初始化界面
public fenxi()
{
super("词法分析器");
this.setSize(600,448);
this.setLocation(200,150);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
JPanel jp =new JPanel();
JPanel jp1 =new JPanel();
jp.setSize(300, 400);
jp1.setSize(300, 400);
jp.setLocation(0, 0);
jp1.setLocation(300, 0);
jp.setLayout(null);
jp1.setLayout(null);
ta1=new JTextArea(20,30);
ta2=new JTextArea(20,30);
ta2.setEditable(false);
JScrollPane scrol1=new JScrollPane(ta1,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
JScrollPane scrol2=new JScrollPane(ta2,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrol1.setSize(260, 310);
scrol1.setLocation(18, 40);
scrol2.setSize(260, 310);
scrol2.setLocation(18, 40);
jp.add(scrol1);
jp1.add(scrol2);
jb.setBounds(80, 370, 100, 25);
jb1.setBounds(80, 370, 100, 25);
jl1.setFont(new Font("楷书",Font.BOLD,12));
jl1.setSize(140, 25);
jl1.setLocation(0, 0);
jl2.setFont(new Font("楷没锋书",Font.BOLD,12));
jl2.setSize(140, 25);
jl2.setLocation(0, 0);
jp.add(jb1);
jp.add(jl1);
jp1.add(jb);
jp1.add(jl2);
this.add(jp);
this.add(jp1);
jb.addActionListener(this);
jb1.addActionListener(this);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
//点击了“清空文本”区按钮
if(e.getSource()==jb1)
{
int a=JOptionPane.showConfirmDialog(null, "确定清空吗？","提示！",JOptionPane.YES_NO_OPTION);
//执行清空操作
if( a==JOptionPane.YES_OPTION)
{
ta1.setText("");
ta2.setText("");
}
}
//点击了“词法分析”分析按钮
if(e.getSource()==jb)
{
int m=0;//控制数组b的下标
int n=0;
float f;
String str[]=new String[20];
int c[]=new int[20];
for(int i=0;i<20;i++)
{
c[i]=i;
}
String str1 = new String();
//把你输入的软代码赋值给字符串变量a
String a=ta1.getText();
//把a中的字符一个一个放入字符数组b中
char[] b=new char[a.length()];
for(int i=0;i<a.length();i++)
b[i]=a.charAt(i);

while(m<a.length())
{
//已过时。由 isWhitespace(char) 取代。确定指定字符依据 Java 标准是否为空白字符。
if(Character.isSpace(b[m]))
{
m++;
}
//确定指定字符是否为数字
else if(Character.isDigit(b[m]))
{
boolean flag=false;
int mn=0;
int xy=0;
int ab=0;
while(m<a.length()&& !Character.isSpace(b[m])&& b[m]!='('&& b[m]!=')'&& b[m]!='+'&& b[m]!='*'&& b[m]!='/'&& b[m]!='>'&& b[m]!='<'&& b[m]!='='&& b[m]!=','&& b[m]!=';'|| ((m<a.length() && Character.isDigit(b[m]))||(m<a.length() && b[m]=='.')||(m<a.length() && Character.isLetter(b[m]))))
{
str1=str1+str1.valueOf(b[m]);
m++;
}
//判断是否是一个数字
for(int i=0;i<str1.length();i++)
{
if(str1.charAt(i)!='.'&& !Character.isDigit(str1.charAt(i)))
mn=1;
}
//mn为0则为数字（浮点或整数 分别翻译成十六进制 和 二进制）
if(mn==0)
{
for(int k=0;k<str1.length();k++)
{
if(str1.charAt(k)=='.')
flag=true;
}
if(flag)
{
f=Float.valueOf(str1);
ta2.setText(ta2.getText()+str1+"\t"+Float.toHexString(f)+"\n");
}
else
{
int x =Integer.valueOf(str1);
ta2.setText(ta2.getText()+x+"\t"+Integer.toBinaryString(x)+"\n");
}
}
//科学计算法 或是 非法字符
else
{
for(int i=0;i<str1.length();i++)
if(Character.isLetter(str1.charAt(i))||str1.charAt(i)=='-')
{
xy++;
ab=i;
}
if(xy==1 && str1.charAt(ab)=='e')
ta2.setText(ta2.getText()+str1+"\t"+"e"+str1+"\n");
else if(xy==2 && str1.charAt(ab)=='-' && str1.charAt(ab-1)=='e')
{
ta2.setText(ta2.getText()+str1+"\t"+"-e"+str1+"\n");
}
else
ta2.setText(ta2.getText()+str1+"\t"+"非法标志符"+"\n");
}
str1="";
}
//确定指定字符是否为字母。
else if(Character.isLetter(b[m]))
{
//不是结束符则继续(改正了定义数组时字符后面跟“[”)
while(m<a.length()&& !Character.isSpace(b[m])&& b[m]!='('&& b[m]!=')'&& b[m]!='+'&& b[m]!='-'&& b[m]!='*'&& b[m]!='/'&& b[m]!='>'&& b[m]!='<'&& b[m]!='='&& b[m]!=','&& b[m]!=';'&& b[m]!='[')
{
str1=str1+str1.valueOf(b[m]);
m++;
}
//gj是保留字
if(str1.equals(gj[0]))
ta2.setText(ta2.getText()+str1+"\t"+"41"+"\n");
else if(str1.equals(gj[1]))
ta2.setText(ta2.getText()+str1+"\t"+"42"+"\n");
else if(str1.equals(gj[2]))
ta2.setText(ta2.getText()+str1+"\t"+"43"+"\n");
else if(str1.equals(gj[3]))
ta2.setText(ta2.getText()+str1+"\t"+"44"+"\n");
else if(str1.equals(gj[4]))
ta2.setText(ta2.getText()+str1+"\t"+"45"+"\n");
else if(str1.equals(gj[5]))
ta2.setText(ta2.getText()+str1+"\t"+"46"+"\n");
//
else
{
int p=1;
for(int i=0;i<str1.length();i++)
{
if(!Character.isLetter(str1.charAt(i))&&!Character.isDigit(str1.charAt(i))&&str1.charAt(i)!='_')
p=0;//字符串不是字符或数字的话 就是非法字符(更正用下划线定义变量 但不能识别的错误)
}
if(p==1)
{
for(int j=0;n>0 && j<n;j++)
{
if( str1.equals(str[j]))
{
ta2.setText(ta2.getText()+str1+"\t"+c[j]+"\n");
str1="";
}
}
if(str1!="")
{
str[n]=str1;
ta2.setText(ta2.getText()+str1+"\t"+c[n]+"\n");
n++;
}
str1="";
}
else
{
ta2.setText(ta2.getText()+str1+"\t"+"非法标志符"+"\n");
}
}
str1="";
}
//
else if(b[m]=='+')
{
m++;
if(m<a.length() && Character.isDigit(b[m]))
{
while((m<a.length() && Character.isDigit(b[m]) )|| (m<a.length() && b[m]=='.'))
{
str1=str1+str1.valueOf(b[m]);
m++;
}
ta2.setText(ta2.getText()+"+"+str1+"\t"+"00"+str1+"\n");

}
else
{
if(m<a.length()&& b[m]=='+')
{
ta2.setText(ta2.getText()+"++"+"\t"+"47"+"\n");
m++;
}
else
{
m--;
ta2.setText(ta2.getText()+b[m]+"\t"+"21"+"\n");
m++;
}
}
str1="";
}
//
else if(b[m]=='-')
{
m++;
if(m<a.length() && Character.isDigit(b[m]))
{
while((m<a.length() && Character.isDigit(b[m]) )|| (m<a.length() && b[m]=='.'))
{
str1=str1+str1.valueOf(b[m]);
m++;
}
ta2.setText(ta2.getText()+"-"+str1+"\t"+"11"+str1+"\n");
}
else
{
if(m<a.length()&&b[m]=='-')
{
ta2.setText(ta2.getText()+"--"+"\t"+"48"+"\n");
m++;
}
else
{
m--;
ta2.setText(ta2.getText()+b[m]+"\t"+"22"+"\n");
m++;
}
}
str1="";
}
//
else if(b[m]=='*')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"23"+"\n");
m++;
}
//
else if(b[m]=='<')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{
str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"25"+"\n");
m++;
}
else
ta2.setText(ta2.getText()+str1+"\t"+"24"+"\n");
str1="";
}
//
else if(b[m]=='>')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"27"+"\n");
m++;
}
else ta2.setText(ta2.getText()+str1+"\t"+"26"+"\n");
str1="";
}
//
else if(b[m]=='=')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"29"+"\n");
m++;
}
else ta2.setText(ta2.getText()+str1+"\t"+"28"+"\n");
str1="";

}
//30,"=" 31,"!="
else if(b[m]=='!')
{
str1=str1+str1.valueOf(b[m]);
m++;
if(b[m]=='=')
{
str1=str1+str1.valueOf(b[m]);
ta2.setText(ta2.getText()+str1+"\t"+"31"+"\n");
m++;
}
else ta2.setText(ta2.getText()+str1+"\t"+"30"+"\n");
str1="";
}
//32
else if(b[m]==';')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"32"+"\n");
m++;
}
//33
else if(b[m]==',')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"33"+"\n");
m++;
}
//34
else if(b[m]=='(')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"34"+"\n");
m++;
}
//35
else if(b[m]==')')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"35"+"\n");
m++;
}
//36
else if(b[m]=='{')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"36"+"\n");
m++;
}
//37
else if(b[m]=='}')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"37"+"\n");
m++;
}
//38
else if(b[m]=='[')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"38"+"\n");
m++;
}
//39
else if(b[m]==']')
{
ta2.setText(ta2.getText()+b[m]+"\t"+"39"+"\n");
m++;
}
//40
else if(b[m]=='/')
{
m++;
if(m<a.length() && b[m]=='*')
{
m++;
inner:
for(;true;)
{
label:
for(;b[m]!='*';)
{
m++;
for(;b[m]=='*';)
{
m++;
for(;b[m]!='/';)
{
continue label;
}
if(b[m]=='/')
m++;
break inner;
}
}
}
}
else
{
m--;
ta2.setText(ta2.getText()+b[m++]+"\t"+"40"+"\n");
}
}
//
else
{
ta2.setText(ta2.getText()+b[m]+"\t"+"非法字符"+"\n");
m++;
}
//全部检查完毕，一while循环
}

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