In this example, we will demonstrate how to initialize an Array in Java in one line.

Learn complete Arrays in Java at https://www.javaguides.net/2018/08/java-array-basics-guide.html.

How to Initialize an Array in Java in One Line

The following program demonstrates:

1. Initialize Integer Array in one line

2. Initialize Spring Array in one line

3. Initialize Employee Array in one line

package com.javaguides.corejava.arrays;

/**
 * Class demonstrate the basics of Array
 * @author javaguides.net
 *
 */
public class JavaArrayDemonstration {

    public static void main(String[] args) {
    
       // shortcut syntax to create and initialize an integer array
       int[] array = { 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 };
       // Each array element is accessed by its numerical index:
       System.out.println("Element 1 at index 0: " + array[0]);
       System.out.println("Element 2 at index 1: " + array[1]);
       System.out.println("Element 3 at index 2: " + array[2]);
       System.out.println("Element 4 at index 3: " + array[3]);
       System.out.println("Element 5 at index 4: " + array[4]);
  
       // shortcut syntax to create and initialize an string array
       String[] arrayOfStrings = {"abc", "xyz", "name", "address", "id"};
       // Each array element is accessed by its numerical index:
       System.out.println("Element 1 at index 0: " + arrayOfStrings[0]);
       System.out.println("Element 2 at index 1: " + arrayOfStrings[1]);
       System.out.println("Element 3 at index 2: " + arrayOfStrings[2]);
       System.out.println("Element 4 at index 3: " + arrayOfStrings[3]);
       System.out.println("Element 5 at index 4: " + arrayOfStrings[4]);
  
       // shortcut syntax to create and initialize an array
       Employee[] employees = {new Employee(10, "ramesh"),new Employee(11, "john")};
       // Each array element is accessed by its numerical index:
       System.out.println("Element 1 at index 0: " + employees[0].getName());
       System.out.println("Element 2 at index 1: " + employees[1].getName());  
    }
}

class Employee {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Employee(int id, String name) {
        super();
        this.id = id;
        this.name = name;
    }
}

Output:

Element 1 at index 0: 100
Element 2 at index 1: 200
Element 3 at index 2: 300
Element 4 at index 3: 400
Element 5 at index 4: 500
Element 1 at index 0: abc
Element 2 at index 1: xyz
Element 3 at index 2: name
Element 4 at index 3: address
Element 5 at index 4: id
Element 1 at index 0: ramesh
Element 2 at index 1: john