java用stack计算字符串

package thread.stack.calculator;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Set;

public class Run_clsStack
{
    public static void main(String[] args)
        throws Exception
    {
        // File file = new File("f:\\emps.java");
        // BufferedReader buffer = new BufferedReader(new FileReader(file));
        // while (buffer.ready())
        // {
        // String line = buffer.readLine();
        // System.out.println(line);
        // }
        String[] cStrings = new String[20];
        Hashtable<String, Integer> ht = new Hashtable<String, Integer>();
        for (int i = 0; i < 100; i++)
        {
            if (i < 100)
            {
                Count cls = new Count();
                Input_ detail = new Input_();
                clsStack_ cls1 = new clsStack_();
                String str = detail.InputString_();
                String var = str.split("=")[0].split(" ")[1];
                String value1 = str.split("=")[1];
                String value = value1.split(";")[0];
                System.out.println("Value:" + value);
                // 取代字母给予值
                // Set<String> htt = (Set<String>)ht.keySet();
                // System.out.println("size =====================> " + htt.size());
                // for (Iterator iterator = htt.iterator(); iterator.hasNext();)
                // {
                // String key = (String)iterator.next();
                // value = value.replace(key, ht.get(key) + "");
                // }
                cStrings = value.split("\\/|\\*|\\+|\\-");
                for (int j = 0; j < cStrings.length; j++)
                {
                    if (ht.get(cStrings[j]) != null)
                    {
                        value = value.replace(cStrings[j], ht.get(cStrings[j]) + "");
                    }
                }
                // 通过计算得值
                double db = cls1.getValue(value);
                int c = (int)db;
                ht.put(var, c);
                System.out.println("值:" + db);
                System.out.println("---------------------------------");
            }
            else
            {
                break;
            }
        }
    }
}