_The so-called object array means that it contains a group of related objects, but in the use of the object array, the reader must be clear: the array must open up space, but because it is a reference data type, so each object in the array is a null value, then each object in the array must be instantiated separately when it is used.
Object array declaration:

Class object array name [] = new class [array length];

Example 1 code: dynamic initialization of object arrays

package self.learn.objectarray;

public class Person {             // Define Person class
	private String name;
    public Person() {
		
	}	
    public Person(String name) {
		this.name = name;
	}	
	
	public String getName() {     // Get the name
		return this.name;
	}
}

package self.learn.objectarray;

public class ObjectArrayDemo {

	public static void main(String[] args) {
		Person per[] = new Person[3];        // Declare an array of objects
		// Every element is the default value before the object array is initialized
		System.out.println("=============== Array declaration ================");
		for(int i = 0; i < per.length; i++) {
			System.out.print(per[i]+",");
		}
		// Each element in the array is initialized separately, each of which is an object and needs to be instantiated separately.
		per[0] = new Person("Zhang San");
		per[1] = new Person("Li Si");
		per[2] = new Person("Wang Wu");
		System.out.println("\n=============== Object instantiation  ================");
		for(int i = 0; i < per.length; i++) {
			System.out.print(per[i].getName()+",");
		}		
	}
}

Operating results screenshot:

Like array initialization, object arrays can be divided into static initialization and dynamic initialization. The above operation is the dynamic initialization of arrays. The static initialization code is as follows:

Example 2 code: Statically initialize an array of objects

package self.learn.objectarray;

public class ObjectArrayDemo {

	public static void main(String[] args) {
		Person per[] = {new Person("Zhang San"),new Person("Li Si"),new Person("Wang Wu")};        // Declare an array of objects
		System.out.println("=============== Array output  ================");
		for(int i = 0; i < per.length; i++) {
			System.out.print(per[i].getName()+",");
		}		
	}
}

Operating results screenshot: