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Basic_Variables.java

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package basics;

public class Basic_Variables {

public static void main(String[] args) {

// TODO Auto-generated method stub

/*syntax:

type variable = value;

*/

//1

String name;

name="John";

System.out.println("1->"+name);

//2

int mynum=15;

System.out.println("2-> "+mynum);

//3

int Mynum=15;

Mynum=20;

System.out.println("3-> "+Mynum);

//4

float num=0.99f;

System.out.println("4-> "+num);

//5

char letter='d';

System.out.println("5-> "+letter);

//6

boolean val=true;

System.out.println("6-> "+val);

//7

String fName="Jhon";

String lName="Doe";

String fullName=fName+lName;

System.out.println("7-> "+fullName);

//8

int x=5;

int y=7;

System.out.println("8th output");

System.out.println(x+y);

System.out.println("8-> "+x+y);

//9

int a=5,b=8,c=3;

System.out.println("9th output");

System.out.println(a+b+c);

System.out.println("9-> "+a+b+c);

//data types

//primitive data types

System.out.println("________________________________________________________");

System.out.println("Data Types:");

System.out.println("for whole numbers: byte,short,int,long: ");

byte Num=100;

System.out.println(Num);

short num1=5000;

System.out.println(num1);

int num2=10000;

System.out.println(num2);

long num3=100000000000000L;

System.out.println(num3);

System.out.println("________________________________________________________");

System.out.println("for floating point number:");

float fnum=0.99F;

System.out.println(fnum);

double dnum=19.99d;

System.out.println(dnum);

System.out.println("________________________________________________________");

System.out.println("For Scientific numbers: ");

float f1 = 35e3f;

double d1 = 12E4d;

System.out.println(f1);

System.out.println(d1);

System.out.println("________________________________________________________");

System.out.println("boolean values: ");

boolean isJavaFun=true;

boolean isFishTasty=false;

System.out.println(isJavaFun);

System.out.println(isFishTasty);

System.out.println("________________________________________________________");

System.out.println("Non primitive data types: String,Class,Array,Interface etc ");

String name1="Sunil";

System.out.println(name1);

}

}