expressionfour.java

同学的一个java 程序

package midLanguage;

import java.util.*;

public class  expressionFour extends expression{
	public void formLanguage(int loop){			//重写formLanuage()方法，形成四元式
						char opera;
			char op1,op2;
			opera = ((Character)B.pop()).charValue();
			op1 = ((Character)A.pop()).charValue();	
			op2 = ((Character)A.pop()).charValue();	
			A.push(new Character((char)(loop+'0')));
			System.out.println("expression "+loop+":  ("+opera+","+op1+","+op2+","+loop+")");
			//A.push(B.pop());
	}
	public void print(){
		}
}//end of class nbl