Dev.to

DAY 40: Array in Looping JAVA

In Java, an array is a data structure that stores a fixed-size, sequential collection of elements of the same data type. It is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created and remains fixed throughout its lifetime. Arrays are used to organize data efficiently and can be defined and initialized in various ways. Array - Group of similar datatypes Why do you use an array? Arrays are handy when you want to work with multiple values of the same data type. Instead of declaring individual variables for each value, you can group them together in an array, making your code more concise and easier to manage. Index / Subscript: 0 1 2 3 4 marks[0] = 90; marks[1] = 95; marks[2] = 100; marks[3] = 78; marks[4] = 94; System.out.println(marks[0]); System.out.println(marks[1]); System.out.println(marks[2]); System.out.println(marks[3]); System.out.println(marks[4]); int i =0; System.out.println(marks[i]); i = i+1; System.out.println(marks[i]); i = i+1; System.out.println(marks[i]); i = i+1; System.out.println(marks[i]); i = i+1; System.out.println(marks[i]); i = i+1; we add while loop int i =0; while(i

May 8, 2025 - 04:24
 0
DAY 40: Array in Looping JAVA

In Java, an array is a data structure that stores a fixed-size, sequential collection of elements of the same data type. It is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created and remains fixed throughout its lifetime. Arrays are used to organize data efficiently and can be defined and initialized in various ways.

Array - Group of similar datatypes

Why do you use an array?

Arrays are handy when you want to work with multiple values of the same data type. Instead of declaring individual variables for each value, you can group them together in an array, making your code more concise and easier to manage.

Index / Subscript:  0   1   2   3   4

marks[0] = 90;  
marks[1] = 95; 
marks[2] = 100; 
marks[3] = 78; 
marks[4] = 94;

System.out.println(marks[0]); 
System.out.println(marks[1]); 
System.out.println(marks[2]); 
System.out.println(marks[3]); 
System.out.println(marks[4]); 

int i =0; 
System.out.println(marks[i]); i = i+1; 
System.out.println(marks[i]); i = i+1;
System.out.println(marks[i]); i = i+1;
System.out.println(marks[i]); i = i+1;
System.out.println(marks[i]); i = i+1;

we add while loop

int i =0; 
while(i<5)
{
System.out.println(marks[i]); 
i = i+1; 
}


int i =0;  //Initial Value  Only Once
while(i for loop: 

for(int i =0; i

Using Scanner

Scanner scanner = new Scanner(System.in);
        System.out.println("Enter Mark:");
        int mark1 = scanner.nextInt();
        System.out.println("hi "+ mark1);

input()
scanner.next()

Scanner scans the next token from user (From console)

Scanner scanner = new Scanner(System.in);
System.out.println("Tell Me your name ");
String name = scanner.nextLine();
System.out.println("Welcome to Java "+ name);


        Scanner scanner = new Scanner(System.in);

        int mark1 = scanner.nextInt(); 
        int mark2 = scanner.nextInt(); 
        int mark3 = scanner.nextInt(); 

        Scanner scanner = new Scanner(System.in);

        int[] marks = new int[5]; 

         marks[0] = scanner.nextInt(); 
         marks[1]= scanner.nextInt(); 
         marks[2] = scanner.nextInt(); 
         marks[3]= scanner.nextInt(); 
         marks[4] = scanner.nextInt();
Read More

Tags:

Previous Article

How to Fix Clerk AuthMiddleware Errors in TypeScript?

Next Article

How to Troubleshoot Ansible Playbook Execution Issues in Bash?

Related Posts

How to Add an Element to an ArrayList in a HashMap?

How to Add an Element to an ArrayList in a HashMap?

May 8, 2025  0

Review My Portfolio

Review My Portfolio

May 1, 2025  0

Mastering software architecture: 6 patterns every developer should know and actually use

Mastering software architecture: 6 patterns every devel...

Apr 27, 2025  0