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); } }