# 083 Calculator.java + TestCalculator.java
Calculator.java
package ch06;
/*
* 建立方法並觀察參數傳遞與回傳值
* 搭配TestCalculator.java一起使用
*/
public class Calculator {

public int sum(int x, int y){
System.out.println("method-1");
return x + y;
}

public float sum(float x, float y) {
System.out.println("method-2");
return x + y;
}

public float sum(int x, float y) {
System.out.println("method-3");
return x + y;
}

}

TestCalculator.java
package ch06;
/*
* 觀察方法傳入參數之間與回傳值的對應
*/
public class TestCalculator {

public static void main(String[] args) {
Calculator myCalculator = new Calculator();

int sum1 = myCalculator.sum(1,2);
System.out.println(sum1);

// float sum2 = myCalculator.sum(3.0f, 4.0f);
// System.out.println(sum2);

// float sum3 = myCalculator.sum(5, 6.0f);
// System.out.println(sum3);

}

}