qq.java

java计算器的源代码 主要是为了开通账号 见谅。比较乱 里面有挺多的 具体自己找

package ss.jsp;
import java.math.*;
public class QQ {
	Double first;
	Double second;
	String pro;
	Double result;
	

	
	public void setFirst(Double first) {
		this.first=first; 
	}

	public void setSecond(Double second) {
		this.second=second; 
	}

	public void setPro(String pro) {
		this.pro = pro; 
	}

	public void setResult(Double result) {
		this.result=result; 
	}
	public Double getFirst() {
		return (this.first); 
	}

	public Double getSecond() {
		return (this.second); 
	}

	public String getPro() {
		return (this.pro); 
	}
    public Double getResult(){
     if(pro.equals("+"))
       {  result=first+second;
       } 
      else if(pro.equals("-"))
       {  result=first-second;
       }
      else if(pro.equals("*"))
       {  result=first*second;
       }
      else if(pro.equals("/"))
       {  result=first/second;
       }
      return result; 

    }
}