What Is An Array Of Objects?

JAVA ARRAY OF OBJECT, as defined by its name, stores an array of objects. Unlike a traditional array that store values like string, integer, Boolean, etc an array of objects stores OBJECTS. The array elements store the location of the reference variables of the object.

Syntax:

Class obj[]= new Class[array_length]

Example: To create Array Of Objects
Step 1) Copy the following code into an editor

class ObjectArray{
   public static void main(String args[]){
     Account obj[] = new Account[2] ;
     //obj[0] = new Account();
     //obj[1] = new Account();
    obj[0].setData(1,2);
    obj[1].setData(3,4);
    System.out.println("For Array Element 0");
    obj[0].showData();
    System.out.println("For Array Element 1");
     obj[1].showData();
  }
}
class Account{
  int a;
  int b;
 public void setData(int c,int d){
   a=c;
   b=d;
 }
 public void showData(){
   System.out.println("Value of a ="+a);
   System.out.println("Value of b ="+b);
 }
}

Step 2) Save , Compile & Run the Code.

Step 3) Error=? Try and debug before proceeding to step 4.

Step 4) The line of code, Account obj[] = new Account[2]; exactly creates an array of two reference variables as shown below

Java Array

Step 5) Uncomment Line # 4 & 5. This step creates objects and assigns them to the reference variable array as shown below. Your code must run now.

Java Array

Output:

For Array Element 0
Value of a =1
Value of b =2
For Array Element 1
Value of a =3
Value of b =4

 

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