How to implement java array reference

Explanation

1. The array can be regarded as a special class, and the writing method is consistent with the constructor reference. The formal parameter list of the abstract method of the functional interface is consistent with the formal parameter list of the constructor.

2. The format is

数组类型 [] :: new

Example

//数组引用
//Function中的R apply(T t)
@Test
public void test4() {
    Function<Integer, String[]> func1 = length -> new String[length];
    String[] arr1 = func1.apply(5);
    System.out.println(Arrays.toString(arr1));
 
    System.out.println("====================");
 
    //使用方法引用
    Function<Integer,String[]>func2=String[]::new;
    String[] arr2 = func2.apply(10);
    System.out.println(Arrays.toString(arr2));
}

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