Java determines whether an object is an array

Determine whether the object is an array:

public static void main(String[] args) {
        String[] a = ["1","2"];

        if(a instanceof String[]){
            System.out.println("ss")
        }

        if(a.getClass().isArray()){
            System.out.println("yy")
        }
    }

The first method: instanceof

The instanceof operator in java is used to point out at runtime Whether the object is an instance of a specific class. instanceof returns a Boolean value indicating whether the object is an instance of this specific class or a subclass of it.

Usage:

result = object instanceof class

Parameters:

Result: Boolean type.

Object: required. Any object expression.

Class: required. Any defined object class.

Second approach: Class class isArray()

isArray() method is used to determine whether an object is an array.

Returns true if the object is an array, otherwise returns false.

Syntax:

Array.isArray(obj)

Parameters: obj Required, the object to be judged.​

For more java knowledge, please pay attention to java basic tutorial.

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