How to run java simple program using notepad

 Java simple program using notepade and cmd-Based on java basic notes

1  Java hello world program

class Hello1{

public static void main(String arg[]){

       System.out.println("Hello World");

    }

      }

2 Java program to create a string variable

class StringExample

{

  public static void main(String[] args)

 {

    String line1 = "Hello world";

String line2 = "welcome to java programming";

    System.out.println(line1+'\n'+line2);

  }

}

3 Java program to print both small and capital alphabets

class Alphabets {

      public static void main(String args[]){

            char ch;

            System.out.println("Small Alphabets: ");

System.out.println("----------------");

            for( ch = 'a' ; ch <= 'z' ; ch++ ){

               System.out.print(ch+"  ");

            }           

  System.out.println();

            System.out.println("Capital Alphabets: ");

System.out.println("----------------");

            for( ch = 'A' ; ch <= 'Z' ; ch++ ){

               System.out.print(ch+"  ");

}

}

}

4 Java program using different data types

class DatatypeExample

{

public static void main(String a[])

{

byte b_value=126;

short s_value=32767;

int i_value=221133;

long l_value=55334422;

float f_value=3.14f;

double d_value=4.888;

char ch='a';

boolean bln=true;  //true  or false value only

System.out.println("java data type example program");

System.out.println(b_value);

System.out.println(s_value);

System.out.println(i_value);

                System.out.println(f_value);

System.out.println(d_value);

System.out.println(b_value);

System.out.println(ch);

System.out.println(bln);

System.out.println("observe the output value carefully");

}

}

5 Java program using instance and static variable-static block

class VariableExample1

{

int pin=207;

String place="vellur";

static int age=20;

static void display()

{ 

System.out.println("This is static method");

System.out.println("static method is directly accessed");

System.out.println("age  :"+age);

}

static

{

System.out.println("\nThis is static block");

System.out.println("static block first accessed\n");

}

public static void main(String a[])

{

VariableExample1 obj=new VariableExample1();

System.out.println(obj.pin);

System.out.println(obj.place);

System.out.println("instance variable accessed through object creation\n");

display();

}}