DataType In Java Language

java

DataType In Java Language

intiger (int) => int store a number value

String  (String) => String store a group of charater

float  (float) => float store a point value

charater (char) => char store a single charater 

boolean  (boolean) => boolean store true or false only  

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Syntax:- dataType variableName = value ;

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Example :-

         dataType    variableName =      value ;

         int          name        =        23   ; 

String       name        =       "ankit";

float        name        =       23.5f;

char         name        =       'a';

boolean      name        =      true or false;

 simple program to understand the variables in java

public class HelloWorld { public static void main(String[] args) { int num1 = 23; System.out.println(num1); //variables name start with $ and _ its legal for java String name1 = "ankit"; System.out.println(name1); float num2 = 23.5f; System.out.println(num2); char name2 ='a'; System.out.println(name2); boolean isAdult = false; System.out.println(isAdult); byte num =56; System.out.println(num); } }

     

/* there are two type of data type
* primitive -byte(byte1), short(byte2), char(byte2), int(byte4), long(8), float(4), double(8), boolean(1bit)
* non primitive = user can define the data type