Array of Object in Java

 

Array of Object in Java

1. Declare an array variable of the object type. For example, to declare an array of Person objects:

   css
   Person[] people;
   

2. Allocate memory for the array using the new keyword. For example, to create an array of 10 Person objects:

   javascript
   people = new Person[10];
   

3. Initialize each element of the array by creating new objects and assigning their references to the array elements. For example:

   scss
   people[0] = new Person("Alice", 25);
   people[1] = new Person("Bob", 30);
   people[2] = new Person("Charlie", 40);
   // ...
   

Here's a complete example of creating and initializing an array of Person objects:

csharp
public class Person {
    String name;
    int age;
    
    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
}

public class Main {
    public static void main(String[] args) {
        Person[] people = new Person[3];
        
        people[0] = new Person("Alice", 25);
        people[1] = new Person("Bob", 30);
        people[2] = new Person("Charlie", 40);
        
        for (int i = 0; i < people.length; i++) {
            System.out.println(people[i].name + " is " + people[i].age + " years old");
        }
    }
}

This will output:

python
Alice is 25 years old
Bob is 30 years old
Charlie is 40 years old