How do I add 100 to a list of array elements

public static void main(String[] args) {
        // LINE 1. DECLARE AN ARRAY OF INTEGERS
        int[] anArray; 
        
        // LINE 2. ALLOCATE MEMORY FOR 10 INTEGERS WITHIN THE ARRAY.
        anArray = new int[10];
        
        // Create a usable instance of an input device
        Scanner myInputScannerInstance = new Scanner(System.in); 
        
        // We will ask a user to type in an integer. Note that in this practice
        // code  WE ARE NOT VERIFYING WHETHER THE USER ACTUALLY
        // TYPES AN INTEGER OR NOT. In a production program, we would
        // need to verify this; for example, by including
        // exception handling code. (As-is, a user can type in XYZ
        // and that will cause an exception.)
        System.out.print("Enter an integer and hit Return: ");
        
        // Convert the user input (which comes in as a string even
        // though we ask the user for an integer) to an integer
        int myFirstArrayElement = Integer.parseInt(myInputScannerInstance.next());
        
        // LINE 3. INITIALIZE THE FIRST ARRAY ELEMENT WITH THE CONVERTED INTEGER myFirstArrayElement
        anArray[0] = myFirstArrayElement;
        
        // LINE 4. INITIALIZE THE SECOND THROUGH THE TENTH ELEMENTS BY ADDING 100 TO THE EACH PRECEDING VALUE.
        // EXAMPLE: THE VALUE OF THE SECOND ELEMENT IS THE VALUE OF THE FIRST PLUS 100;
        // THE VALUE OF THE THIRD ELEMENT IS THE VALUE OF THE SECOND PLUS 100; AND SO ON.
        for (int j=0; j < anArray.length; j++) {
            if (anArray[j]!= anArray[0]){
                anArray[j] += 100;
            }
           
        } 

        
        // LINE 5. DISPLAY THE VALUES OF EACH ELEMENT OF THE ARRAY IN ASCENDING ORDER BASED ON THE MODEL IN THE TOP-OF-CODE COMMENTS.
        Arrays.sort(anArray);		// Send our Anarray array to be sorted in ascending order by the sort() method
        int i;				// Define the counter for the loop. We can do it this way or inside
                                        // the for loop, as we did in the preceding for loop.
                                        
        for (i=0; i < anArray.length; i++) {	// Loop, starting at 0 and adding 1 each time, until counter is less than array length. 		
              System.out.println("Element at index " + i + ": " + anArray[i]);// print the numbers
        }

    }
    
}