4) Write a Java program to find sum of command line numbers and count the Invalid integers entered.

source file name: expdemo.java

 class expdemo
{
public static void main (String as[])
{
int n, cnt=0, sum=0;
for(int i=0;i<as.length;i++)
{
try
{
n=Integer.parseInt(as[i]);
sum= sum+n;
}
catch (NumberFormatException e)
{
//system.out.println("invalid integer:");
cnt++;
}
}
System.out.println("Sum of only valid integers is= "+sum) ;

System.out.println("Invalid integers are: "+cnt) ;
}
}

Output:
 

F:\Nalawade\java1819>java expdemo 15 25 30 6 96
Sum of only valid integers is= 172
Invalid integers are: 0

F:\Nalawade\java1819>java expdemo 15 25 -10 23 100 77 603
Sum of only valid integers is= 833
Invalid integers are: 0

F:\Nalawade\java1819>java expdemo 15 25 -10 23 11a 100 77 603
Sum of only valid integers is= 833
Invalid integers are: 1