calculate.java

4种方法实现JSP计算器,通过该文件你可以学到jsp 实现计算器不同的方法

/*
 * calculate.java
 *
 * Created on 2008年5月18日, 下午5:40
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package cal4;

/**
 *
 * @author lu
 */
public class calculate {
    
    /** Creates a new instance of calculate */
    public calculate() {
    }

    private int type;

    private double data1;

    private double data2;

    public void setType(int type) {
        this.type =type;
    }

    public void setData1(double data1) {
        this.data1 =data1;
    }

    public void setData2(double data2) {
        this.data2 =data2;
    }

    public String getResult() {
        String result;
         switch(type)
        {
            case 1:result =data1+"+"+data2+"="+(data1+data2);break;
            case 2:result =data1+"-"+data2+"="+(data1-data2);break;
            case 3:result =data1+"*"+data2+"="+(data1*data2);break;
            default:result =data1+"/"+data2+"="+(data1/data2);break;
        }
        return result;
    }
    
}