stringtok.java~1~

java实现的对算术表达式进行词法分析和语法分析,实现过程很简练,值得参考哦!

package suanfuyouxian;

 class StringTok {
    char ch;
    int no;
    public StringTok(char ch, int no) {
        this.ch = ch;
        this.no = no;
    }
    public void setChar(char ch)
    {
        this.ch = ch;
    }
    public void setNo(int no)
    {
        this.no = no;
    }
    public char getChar()
    {
        return this.ch;
    }
    public int getNo()
    {
        return this.no;
    }
}