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Write a program to calculate area of rectangle. Define a parametrized function "rect" to find area of rectangle

20/03/2013 00:45

 

public class rectangle
{
 void rect(int a,int b)
 {
 int area=a*b;
 System.out.println(area);
}
public static void main(String args[])
{
rectangle ob1=new rectangle();
ob1.rect(5,10);
}
}

Write a program describing different methods of defining functions and calling them into main method

16/03/2013 20:09

Here are 4 methods of defining functions

 

public class functons
{
void add1()
{
int a=7;
int b=9;
int c=a+b;
System.out.println(c);
}
void add2(int a,int b)
{
int c=a+b;
System.out.println(c);
}
int add3()
{
int a=9;
int b=7;
int c=a+b;
return(c);
}
int add4(int a,int b)
{
int c=a+b;
return(c);
}

Here is the method of calling them into "main" method

 

public static void main(String args[])
{
functons ob1=new functons();
ob1.add1();
functons ob2=new functons();
ob2.add2(12,89);
functons ob3=new functons();
System.out.println(ob3.add3());
functons ob4=new functons();
System.out.println(ob4.add4(90,86));
}
}
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