Hello guys, welcome to Lingarajtechhub.com. Today we are going to discuss the Display Array Elements in java.
package com.array.java;
import java.util.Scanner ;
public class Display_array {
public static void main(String[] args) {
int arr[ ]=new int[5];
Scanner Sc=new Scanner(System.in);
System.out.println("enter the values in an array:\n");
for(int i=0;i<arr.length;i++) {
arr[i]=Sc.nextInt();
}
System.out.println("now Display All Element:\n");
for(int i=0;i<arr.length;i++) {
System.out.println(arr[i]);
}
}
}
Line-1:
❖ Package com.array.java;
It is a java package( com.array.java) which is a collection of classes and this package is created in a java project .
Line-3:
❖ import java.util.Scanner;
Scanner is a class in java. util package used for obtaining the input of the primitive types like int, double, etc. and strings .
Line-4:
❖ public class Display_array{
*Here class Display_array is defined as a class which is a template used to create objects and to define object data types and methods .
>–and it’s defined as public because it can be accessed anywhere .
Line-5:
❖ public static void main(String[] args)
>>– it is a main method in which we can execute a program //public :it is an access modifier of the main function which must be public so that the JVM which is (Java Virtual Machine)can access and execute this method.
//If a method is not public, then access is restricted and its showing error //static is a keyword in which main method has must to be static in which JVM can load the class into memory and call the main method without creating an instance
//void it means no return type
//main() is function string[]args : string means collection of characters ,String[] args represents a collection of Strings that are separated by a space and can be typed into the program on the terminal directly
Line-6:
❖ int arr[ =new int[5] ;
>>– here we declare array size and initialise the array element which is integer type.
Line-7:
❖ Scanner sc=new Scanner(System.in);
>>–it means here scanner is a class and Sc is the instance of the object which is new Scanner.System.in is an argument
Line-8:
❖ System.out.println(“Enter the values in an array:\n “);
>>– it means System is a class name and out is an instance of the System println is print a new line .
Line-9:
❖ for(int i=0;i<arr.length;i++) {
>>it means loop through the array by incrementing the value of i.
Line-10:
- arr[i]=sc.nextInt();
>>– here i is a variable that we take and Sc is our instance name which is created for an object and nextInt() is a method method of a Scanner object that reads in a string of digits or char and converts them into an int type.
Line-13:
❖ System.out.println(“now display all Element:\n”);
>>– it means System is a class name and out is an instance of the System println is print a new line .
>>– display the element which is taken by keyboard.
Line-14:
❖ for(int i=0;i<arr.length;i++) {
>>it means loop through the array by incrementing the value of i.
Line-15:
❖ System.out.println(arr[i]);
>>– it means System is a class name and out is an instance of the System println is print a new line .
>>– arr[i] it means to display the array.
