如何在Java中使用方法的返回值？
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How to use return value from method in Java?
提问by Amit Tegwan
I want to use the return value from a member function by storing it into a variable and then using it. For example:
我想通过将成员函数的返回值存储到变量中然后使用它来使用它。例如：
public int give_value(int x,int y) {
int a=0,b=0,c;
c=a+b;
return c;
}
public int sum(int c){
System.out.println("sum="+c);
}
public static void main(String[] args){
obj1.give_value(5,6);
obj2.sum(..??..); //what to write here so that i can use value of return c
//in obj2.sum
}
回答by Thomas Stets
try
尝试
int value = obj1.give_value(5,6);
obj2.sum(value);
or
或者
obj2.sum(obj1.give_value(5,6));
回答by SMA
You give_valuemethod returns an integer value, so you can either store that integer value in a variable like:
Yougive_value方法返回一个整数值，因此您可以将该整数值存储在一个变量中，例如：
int returnedValueFromMethod = obj1.give_value(5,6);//assuming you created obj1
obj2.sum(returnedValueFromMethod );//passing the same to sum method on obj2 provided you have valid instance of obj2
Or if you want to compact your code (which i don't prefer), you can do it in one line like:
或者，如果您想压缩您的代码（我不喜欢），您可以在一行中完成，例如：
obj2.sum(obj1.give_value(5,6));
回答by Gnanadurai A
This is what you need :
这是你需要的：
public int give_value(int x,int y){
int a=0,b=0,c;
c=a+b;
return c;
}
public int sum(int c){
System.out.println("sum="+c);
}
public static void main(String[] args){
obj2.sum(obj1.give_value(5,6));
}
