Java Programs

Ex 1
--------------
class Test
{
int a=10,b=3; //global or instance variables

public void display()
{
System.out.println("This is my First Method");
}

public void Sum(int x, int y)
{
System.out.println("The Sum is "+(x+y));
}

public int Subtract(int x, int y)
{
return x-y;
}

public int Product()
{
return a*b;
}

public void Rem()
{
System.out.println("The Remainder is "+(a%b));
}

public void Qts()
{
System.out.println("The Quotient is "+(a/b));
}
}
class A15
{
public static void main(String[] args)
{
Test T=new Test();
T.display();
T.Sum(10,20);
System.out.println("The Subtraction is "+T.Subtract(10,4));
System.out.println("The Product is "+T.Product());
T.Rem();
T.Qts();
}
}

Ex 2
--------------
//local variables

class Test
{
public void display()
{
int x=10;
int y=20;
System.out.println("The Sum is "+(x+y));
}
}
class A16
{
public static void main(String[] args)
{
Test T=new Test();
T.display();
}
}

Ex 3
----------------
//static or class varibales

class Test
{
static int sno=101;
static String sname="Vijay";
}
class A17
{
public static void main(String[] args)
{
System.out.println("Student No: "+Test.sno);
System.out.println("Student Name: "+Test.sname);
}
}

Ex 4
-----------------
//static method

class Test
{
public static void display()
{
System.out.println("This is static method");
}
}
class A18
{

public static void main(String[] args)
{
Test.display();
}
}

Ex 5

--------------

//Constructor

class Test

{

public Test()

{

System.out.println("This is parameterless constructor");

}

public Test(int x)

{

System.out.println("Integer Value is "+x);

}

public Test(int x, int y)

{

System.out.println("Integer Sum is "+(x+y));

}

public Test(String str)

{

System.out.println("String is "+str);

}

public Test(float f)

{

System.out.println("Float Value is "+f);

}

}

class A19

{

public static void main(String[] args)

{

Test T=new Test();

Test T1=new Test(10);

Test T2=new Test(10,20);

Test T3=new Test("This is Constructor");

Test T4=new Test(234.45f);

}

}