Java的参数与参数

争论

一种说法是传递给函数的值当函数被调用。每当在程序执行期间调用任何函数时，都会有一些值与函数传递。这些值称为参数。与函数一起传递的参数将替换为在函数定义期间使用的那些变量，然后使用这些值执行函数。让我们看一些例子以便于理解：

例子：

public class Example {
  
    public static int multiply(int a, int b)
    {
        return a + b;
    }
  
    public static void main(String[] args)
    {
        int x = 2;
        int y = 5;
  
        // the variables x and y are arguments
        int sum = multiply(x, y);
  
        System.out.println("SUM IS: " + sum);
    }
}

输出：

SUM IS: 7

在上面的例子中的函数$main$变量 x 和 y 是参数

参数

参数是用于在函数定义期间定义特定值的变量。每当我们定义一个函数，我们都会向编译器引入一些在该函数运行中使用的变量。这些变量通常称为Parameters 。参数和参数大多具有相同的值，但理论上彼此不同。

例子：

public class Example {
  
    // the variables a and b are parameters
    public static int multiply(int a, int b)
    {
        return a + b;
    }
  
    public static void main(String[] args)
    {
        int x = 2;
        int y = 5;
  
        int sum = multiply(x, y);
  
        System.out.println("SUM IS: " + sum);
    }
}

输出：

SUM IS: 7

在上面的例子中的函数$multiply$变量 a 和 b 是参数

自变量和参数之间的区别

Argument	Parameter
When a function is called, the values that are passed in the call are called arguments.	The values which are written at the time of the function prototype and the definition of the function.
These are used in function call statement to send value from the calling function to the called function.	These are used in function header of the called function to receive the value from the arguments.
During the time of call each argument is always assigned to the parameter in the function definition.	Parameters are local variables which are assigned value of the arguments when the function is called
They are also called Actual Parameters	They are also called Formal Parameters