Java Variables

Variables are containers for storing data values.

In Java, there are different types of variables, for example:

String - stores text, such as "Hello". String values are surrounded by double quotes

int - stores integers (whole numbers), without decimals, such as 123 or -123

float - stores floating point numbers, with decimals, such as 19.99 or -19.99

char - stores single characters, such as 'a' or 'B'. Char values are surrounded by single quotes

String-store text

The value of a String variable can be assigned using the assignment operator (=).
String values are surrounded by double quotes.

              
 public static void main(String[ ]args){
 String name = "india";
System.out.println(name);
}
}

it can store a decimal number with up to 6-7 digits of precision.

The range of values that a float variable can store is 1.40129846432481707e-45 to 3.40282346638528860e+38.

Public class Float{
public static void main(String[ ]args){
float num=56.34;
 system.out.println(“num1:”+num);
  }                  
 }

store integer value, without decimals

public static void main(String[ ]args){
                    
int age= 15;
System.out.println(age);
}
}

A char variable in Java is a variable that stores a single character.

The value of a char variable can be assigned using the assignment operator (=).

A char value must be surrounded by single quotes, like 'A' or 'c'.

    
public static void main(String[ ]args){
Char c=’a’;
system.out.println(c);
 }
 }

A boolean variable in Java is a variable that stores a Boolean value.

Boolean values can be either true or false.

    
public static void main(String[ ] args){
  boolean myBoolean=false;
system.out.println(myBoolean);
 }
}