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Input & Output in Java
Last Updated : 26 May, 2026
title: Input Output in Java
Fundamentals74 words6 headingsTables includedExamples included
title: Input Output in Java description: Java mein user se input lena aur output dena
Output
System.out.println()
java exampleWoHoTech
System.out.println("Hello"); // newline ke saath
System.out.print("Hello"); // newline nahi
System.out.printf("Name: %s, Age: %d%n", "Ram", 25); // formattedFormat Specifiers
| Specifier | Type |
|---|---|
%d | integer |
%f | float/double |
%s | String |
%c | char |
%b | boolean |
%n | newline |
Input — Scanner Class
java exampleWoHoTech
import java.util.Scanner;
public class InputExample {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Apna naam likhein: ");
String name = sc.nextLine();
System.out.print("Apni age likhein: ");
int age = sc.nextInt();
System.out.print("Salary likhein: ");
double salary = sc.nextDouble();
System.out.println("Naam: " + name);
System.out.println("Age: " + age);
System.out.println("Salary: " + salary);
sc.close(); // Scanner band karo
}
}Scanner ke Important Methods
| Method | Use |
|---|---|
next() | Single word (space tak) |
nextLine() | Poori line |
nextInt() | Integer value |
nextDouble() | Double value |
nextBoolean() | Boolean value |
Common Problem: nextInt() ke baad nextLine()
java exampleWoHoTech
int n = sc.nextInt();
sc.nextLine(); // buffer clear karo
String s = sc.nextLine(); // ab sahi kaam karegaExam Focus
Revise definitions, diagrams, examples, and short-answer points for Input & Output in Java.
Interview Use
Prepare one clear explanation, one practical example, and one common mistake for this Java topic.
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