5) Write a program that finds average of command line arguments which converted into double type numbers using method.

source file name: expdemo3.java

 class expdemo3
{
public static void main (String args[])
{
expdemo3 ob= new expdemo3();
double avg=ob.average(args);
System.out.println("average of "+args.length+" number is: "+avg);
}

public double average (String as[])
{
double sum =0.0 ;
try
{
for( int i=0;i<as.length;i++)
sum=sum+Double.parseDouble(as[i]);
}
 catch(NumberFormatException E2)
 {
 System.out.println("invalid number");
 }
 catch(Exception e1)
 {
 System.out.println(e1);
 }
 System.out.println("sum of numbers: "+sum);
return (sum/as.length);
}
}

OUTPUT:

F:\Nalawade\java1819>javac expdemo3.java

F:\Nalawade\java1819>java expdemo3 25.3 63.4 89.45 142.6 175.9
sum of numbers: 496.65
average of 5 number is: 99.33

F:\Nalawade\java1819>java expdemo3 15.2 3.6 64.5 100.1
sum of numbers: 183.39999999999998
average of 4 number is: 45.849999999999994

F:\Nalawade\java1819>java expdemo3 15.2 3.6 64.51
sum of numbers: 83.31
average of 3 number is: 27.77