java面向对象计算器
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package classCode.practice6;
import java.util.Scanner;
/**
*
* @ClassName: Calculator
* @Description: 计算器类
* @author
*
*/
public class Calculator {
/**
*
* @ClassName: Calculator
* @Description: 计算器类
* @author
*
*/
public class Calculator {
public static void main(String[] args) {
// Operation oper;
// oper=OperationFactory.createOperate('+');
// System.out.println("请输入_numberA:");
// Scanner s = new Scanner(System.in);
// oper.setNumberA(s.nextDouble());
// System.out.println("请输入_numberB:");
// oper.setNumberB(s.nextDouble());
// double result = oper.getResult();
// System.out.println("结果是:"+result);
//
// Operation oper;
// Scanner s = new Scanner(System.in);
// System.out.println("请输入运算符(+ - * /):");
// String operChar = s.next();
// switch(operChar){
// case "+" : oper = new OperationAdd();
// case "-" : oper = new OperationSub();
// case "*" : oper = new OperationMul();
// case "/" : oper = new OperationDiv();
// default:
// oper = new OperationAdd();
// }
// System.out.println("请输入_numberA:");
// oper.setNumberA(s.nextDouble());
// System.out.println("请输入_numberB:");
// oper.setNumberB(s.nextDouble());
// double result = oper.getResult();
// System.out.println("计算结果是:"+result);
// s.close();
//
// System.out.println("请输入_numberA:");
// Scanner s = new Scanner(System.in);
// int num1 = s.nextInt();
// System.out.println("请输入_numberB:");
// int num2 = s.nextInt();
// System.out.println("请输入运算符(+ - * /):");
// String oper = s.next();
// switch(oper){
// case "+" : System.out.println(num1+num2);
// case "-" : System.out.println(num1-num2);
// case "*" : System.out.println(num1*num2);
// case "/" : System.out.println(num1/num2);
// case "%" : System.out.println(num1%num2);
// }
}
// Operation oper;
// oper=OperationFactory.createOperate('+');
// System.out.println("请输入_numberA:");
// Scanner s = new Scanner(System.in);
// oper.setNumberA(s.nextDouble());
// System.out.println("请输入_numberB:");
// oper.setNumberB(s.nextDouble());
// double result = oper.getResult();
// System.out.println("结果是:"+result);
//
// Operation oper;
// Scanner s = new Scanner(System.in);
// System.out.println("请输入运算符(+ - * /):");
// String operChar = s.next();
// switch(operChar){
// case "+" : oper = new OperationAdd();
// case "-" : oper = new OperationSub();
// case "*" : oper = new OperationMul();
// case "/" : oper = new OperationDiv();
// default:
// oper = new OperationAdd();
// }
// System.out.println("请输入_numberA:");
// oper.setNumberA(s.nextDouble());
// System.out.println("请输入_numberB:");
// oper.setNumberB(s.nextDouble());
// double result = oper.getResult();
// System.out.println("计算结果是:"+result);
// s.close();
//
// System.out.println("请输入_numberA:");
// Scanner s = new Scanner(System.in);
// int num1 = s.nextInt();
// System.out.println("请输入_numberB:");
// int num2 = s.nextInt();
// System.out.println("请输入运算符(+ - * /):");
// String oper = s.next();
// switch(oper){
// case "+" : System.out.println(num1+num2);
// case "-" : System.out.println(num1-num2);
// case "*" : System.out.println(num1*num2);
// case "/" : System.out.println(num1/num2);
// case "%" : System.out.println(num1%num2);
// }
}
}
--------------------------------------------------------------------
package classCode.practice6;
/**
*
* @ClassName: Operation
* @Description: 操作类的父类
*/
public class Operation {
private double numberA = 0;
private double numberB = 0;
public double getResult(){
double result =0;
return result;
}
public double getNumberA() {
return numberA;
}
public void setNumberA(double numberA) {
this.numberA = numberA;
}
public double getNumberB() {
return numberB;
}
public void setNumberB(double numberB) {
this.numberB = numberB;
}
}
/**
*
* @ClassName: Operation
* @Description: 操作类的父类
*/
public class Operation {
private double numberA = 0;
private double numberB = 0;
public double getResult(){
double result =0;
return result;
}
public double getNumberA() {
return numberA;
}
public void setNumberA(double numberA) {
this.numberA = numberA;
}
public double getNumberB() {
return numberB;
}
public void setNumberB(double numberB) {
this.numberB = numberB;
}
}
-----------------------------------------------------------
package classCode.practice6;
/**
*
* @ClassName: OperationAdd
* @Description: 加法操作类
*/
public class OperationAdd extends Operation{
/**
*
* @ClassName: OperationAdd
* @Description: 加法操作类
*/
public class OperationAdd extends Operation{
public double getResult(){
double result =0;
result =getNumberA()+getNumberB();
return result;
}
}
double result =0;
result =getNumberA()+getNumberB();
return result;
}
}
---------------------------------------------------------------------
package classCode.practice6;
/**
*
* @ClassName: OperationAdd
* @Description: 除法操作类
*/
public class OperationDiv extends Operation{
/**
*
* @ClassName: OperationAdd
* @Description: 除法操作类
*/
public class OperationDiv extends Operation{
public double getResult(){
double result =0;
result =getNumberA()/getNumberB();
return result;
}
}
double result =0;
result =getNumberA()/getNumberB();
return result;
}
}
------------------------------------------------------------
package classCode.practice6;
import java.util.Hashtable;
/**
*
* @ClassName: OperationFactory
* @Description: 操作工厂类
*/
public class OperationFactory {
public static Operation createOperate(char operate){
Operation oper = null;
switch(operate){
case '+':
oper = new OperationAdd();
break;
case '-':
oper = new OperationSub();
break;
case '*':
oper = new OperationMul();
break;
case '/':
oper = new OperationDiv();
break;
default:
break;
}
return oper;
}
}
*
* @ClassName: OperationFactory
* @Description: 操作工厂类
*/
public class OperationFactory {
public static Operation createOperate(char operate){
Operation oper = null;
switch(operate){
case '+':
oper = new OperationAdd();
break;
case '-':
oper = new OperationSub();
break;
case '*':
oper = new OperationMul();
break;
case '/':
oper = new OperationDiv();
break;
default:
break;
}
return oper;
}
}
-----------------------------------------------------
package classCode.practice6;
/**
*
* @ClassName: OperationMul
* @Description: 乘法操作类
*/
public class OperationMul extends Operation{
/**
*
* @ClassName: OperationMul
* @Description: 乘法操作类
*/
public class OperationMul extends Operation{
public double getResult(){
double result =0;
result =getNumberA()*getNumberB();
return result;
}
}
double result =0;
result =getNumberA()*getNumberB();
return result;
}
}
------------------------------------------------------
package classCode.practice6;
/**
*
* @ClassName: OperationAdd
* @Description: 减法操作类
*/
public class OperationSub extends Operation{
/**
*
* @ClassName: OperationAdd
* @Description: 减法操作类
*/
public class OperationSub extends Operation{
public double getResult(){
double result =0;
result =getNumberA()-getNumberB();
return result;
}
}
double result =0;
result =getNumberA()-getNumberB();
return result;
}
}
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