Curriculum

Course: Java Basic

Curriculum

Java Basic

Java Home

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Java Introduction

0/1

Java Get Started

0/1

Java Syntax

0/1

Java Output / Print

0/2

Java Comments

0/1

Java Variables

0/5

Java Data Types

0/6

Java Type Casting

0/1

Java Operators

0/1

Java Strings

0/4

Java Math

0/1

Java Booleans

0/1

Java If ... Else

0/5

Java Switch

0/1

Java While Loop

0/3

Java For Loop

0/4

Java Break / Continue

0/1

Java Arrays

0/4

Java Methods

0/6

Java Classes

0/26

Java file Handling

0/4

Java How To

0/16

Java Reference

0/53

Java String Methods

0/39

Java Math Methods

0/48

Java Output Methods

0/4

Java Arrays Methods

0/6

Java ArrayList Methods

0/26

Java LinkedList Methods

0/27

Java HashMap Methods

0/23

Java Errors and Exception

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Text lesson

Numbers and Strings

Adding Numbers and Strings

Caution!

In Java, the ‘+’ operator serves dual purposes: for both addition and concatenation.

It performs addition when used with numerical values and concatenation when used with strings.

When you add two numbers in Java, the result will be another number.

Example

int x = 10;
int y = 20;
int z = x + y;  // z will be 30 (an integer/number)

Adding two strings results in their concatenation.

Example

String x = "10";
String y = "20";
String z = x + y; // z will be 1020 (a String)

Adding a number to a string results in string concatenation.

Example

String x = "10";
int y = 20;
String z = x + y; // z will be 1020 (a String)