You wanna become a DEVELOPER

JAVA

1.SIMPLE PROGRAM

class Welcome

{

public static void main(String args[])

{

System.out.println("WELCOME TO DASHVANTH VIRTUAL ACADEMY");

}

}


2. CONSTANT DEMO 

public class Constant_Demo

{

public static void main(String args[])

{

int a;

a=10;

double pi=3.14;

char c='A';

System.out.println(a);

System.out.println(pi);

System.out.println(c);

}

}

3.VARIABLE DEMO

public class Variable_Demo

{

public static void main(String args[])

{

int a;

double pi;

char c;

a=25;

pi=3.14;

c='b';

System.out.println(a);

System.out.println(pi);

System.out.println(c);

a=55;

pi=3.25;

c='d';

System.out.println(a);

System.out.println(pi);

System.out.println(c);

}

}

4.DATA TYPE DEMO

public class Datatype_Demo

{

public static void main(String args[])

{

byte b=127;

short e=1234;

long l=12345;

int a;

float f=1.2f;

double pi;

char c;

a=25;

pi=3.14;

c='b';

System.out.println("b="+b);

System.out.println("e="+e);

System.out.println("l="+l);

System.out.println("a="+a);

System.out.println("f="+f);

System.out.println(pi);

System.out.println(c);

}

}

5.OPERATOR DEMO 

5.1 ARITHMETIC OPERATOR PROGRAM

public class Arithmeticoperator_Demo

{

public static void main(String args[])

{

byte b=127;

short e=1234;

long l=12345;

int a;

float f=1.2f;

double pi;

char c;

a=25;

pi=3.14;

c='b';

long sum=b+e+l+a;

double d=l+f+a+pi;

System.out.println("long sum="+sum);

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

System.out.println("b="+b);

System.out.println("e="+e);

System.out.println("l="+l);

System.out.println("a="+a);

System.out.println("f="+f);

System.out.println(pi);

System.out.println(c);

}

}


5.2 UNARY OPERATOR DEMO

public class Unary_Demo

{

public static void main(String args[])

{

int a=5;

int b=a++;

int c=++a;

//System.out.println(a);

//System.out.println(b);

System.out.println(b);

System.out.println(c);

}

}

6.CONTROL STATEMENTS

6.1 SIMPLE IF PROGRAM

public class if_Demo

{

public static void main(String args[])

{

int a=5;

int b=4;

if(a++<=b++)

{

System.out.println(b);

}

}

}

6.2 IF...ELSE DEMO PROGRAM

public class ifelse_Demo

{

public static void main(String args[])

{

int a=5;

int b=4;

if(a++<=b++)

{

System.out.println(b);

}

else

{

System.out.println(a);

}

}

}

6.3 IF...ELSE DEMO PROGRAM

public class ifelseif_Demo

{

public static void main(String args[])

{

int a=5;

int b=7;

int c= 6;

 

if(a++<b++ && a++<=c++)

{

System.out.println("b1="+b);

System.out.println("c1="+c);

System.out.println("a="+a);

}

else if(a++<b++ & a++<c++)

{

System.out.println("b2="+b);

System.out.println("c2="+c);

}

else if(a++<b++ || a++<c++)

{

System.out.println("b3="+b);

System.out.println("c3="+c);

}

else if(a++<b++ | a++<c++)

{

System.out.println("b4="+b);

System.out.println("c4="+c);

}

}

}

6.4 NESTED IF DEMO PROGRAM

public class Nestedif_Demo

{

public static void main(String args[])

{

int a=5;

int b=6;

int c=7;

if(a<=b)

{

  if(a<=c)

  {

System.out.println(c);

  }

}

}

}

6.5 SWITCH DEMO PROGRAM

public class Switch_Demo

{

public static void main(String args[])

{

int a=5;

int c=564;

for(int i=1; i<=a; i++)

{

switch(i)

{

  case 1:

  {

System.out.println("a");

break;

  }

  case 2:

  {

System.out.println("b");

break;

  }

  case 3:

  {

System.out.println("c");

break;

  }

  case 4:

  {

System.out.println("d");

break;

  }

  case 5:

  {

System.out.println("e");

break;

  }

  default:

  {

System.out.println(c);

break;

  }

}

}

}

}



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