Non - Primitive Datatypes

Wrapper Class 

👉 Program 1

class wrap
{
public static void main(String wrp[])
{
//primitive declaration
int p = 100;
System.out.println("primitive datatype = "  +p);

//non-primitive declaration
Integer h = new Integer(100);
System.out.println("non-primitive datatype = "  +h
);

Double d = new Double(2.1756);
System.out.println("non-primitive datatype = "  +d);

Character c = new Character('K');
System.out.println("non-primitive datatype = "  +c);

}


}

Output 

Variables and Datatypes

■Write a program to print the values of a variables declared 

    using primitive datatypes:

üboolean

übyte

üshort

üint

ülong

üchar

üfloat

üdouble

Sol.   

 class datatype

{

public static void main(String data[])

{

//primitive datatypes

boolean a = false;

System.out.println("boolean is"+a+"by default");

//here + means concatenation

//byte datatype

byte b = 2;

System.out.println("byte is" +b);

//short datatype

short s = 20;

System.out.println("short is" +s);

//int datatype

int i = 200;

System.out.println("integer is" +i);

//long datatype

long l = 2000;

System.out.println("long is" +l);

//char datatype

char ch = 'A';

//char always declared in single quotes

System.out.println("char is" +ch);

//float datatype

float f = 2000000000f;

//0f means representing float numbers

System.out.println("float is" +f);

//double datatype

double d= 2000000000d;

//0d means representing double numbers

System.out.println("double is" +d);

}

}

Output: