java - 从Java方法返回后如何访问返回数据

Question

I'm a Java newbie, and this is a real basic, basic question, so please don't miss the tree for the forest. I just need to know how to access the data coming back from the method

    private static int toInt( String number )
    {
        int multiplicand = 0;
        // do stuff to figure out a multiplicand
        return multiplicand;
    }

    public static void main( String[ ] args )
    {
        int anotherVariable = 53;
        toInt( args[ 0 ] );

So, what do I say here after I've come back from the toInt method in order to access what is in multiplicand?
Lets say I want to multiply what came back in multiplicand * anotherVariable. I cannot use multiplicand because the editor just says "cannot resolve multiplcand to a variable."

Thank you in advance to all the great programmers with the patience to tolerate us newbies.

Answer 1

将函数调用的结果分配给一个变量，然后使用它。

int result = toInt("1");

您现在可以根据需要使用结果；它包含您在方法中返回的任何内容，即被乘数的值。因此，就您而言，您现在可以这样做

int anotherResult = 结果 * anotherVariable;

请注意，您也可以这样做

int anotherResult = toInt(args[0]) * anotherVariable;

无需将 toInt 调用的结果分配给中间变量。

我更喜欢将函数调用分配给变量；使调试更容易。如果您想多次使用结果，那么使用变量几乎总是更好。