> javac lecture4_1.java
>
> java lecture4_1
Please enter an integer: 34
The input string was '34' and the val is 37
>
> java lecture4_1
Please enter an integer: hello
java.lang.NumberFormatException: hello
        at java.lang.Integer.parseInt(Integer.java)
        at java.lang.Integer.valueOf(Integer.java)
        at lecture4_1.main(lecture4_1.java:14)
>
> javac lecture4_2.java
>
> java lecture4_2
In the while loop and Counter is 1
In the while loop and Counter is 2
In the while loop and Counter is 3
In the while loop and Counter is 4
In the while loop and Counter is 5
>