Java 可变参数

    Java(JDK > 1.5) 支持传递同类型的可变参数给一个方法。一个方法中只能指定一个可变参数，它必须是方法的最后一个参数，在指定参数类型后加一个省略号(...) 。

方法的可变参数的声明如下所示：

typeName... parameterName

实例：

public class Test {
    public static void main(String args[]) {
        // 调用可变参数的方法
        printMax("data", "number", "letter");
        printMax(new String[]{"happy", "fun", "lucky", "happiness"});
    }

    public static void printMax( String... lookup) {
        if (lookup.length == 0) {
            System.out.println("No argument passed");
            return;
        }

        String result = lookup[0];

        for (int i = 1; i <  lookup.length; i++){
            if (lookup[i].length() >  result.length()) {
                result = lookup[i];
            }
            else if(lookup[i].length() ==  result.length()){
                System.out.println(result + " and " + lookup[i] + " : Both strings are the same length");
            }        
        }
        System.out.println("The maximum field of \"lookup\" is : " + result);
    }
}

结果展示：

number and letter : Both strings are the same length
The maximum field of "lookup" is : number
happy and lucky : Both strings are the same length
The maximum field of "lookup" is : happiness

 

来源：CSDN

作者：*MuYu*

链接：https://blog.csdn.net/qq_36535820/article/details/103968042