Identify the problems in the following code.

```
public class Test {
public static void main(String argv[]) {
System.out.println("argv.length is " + argv.length);
}
} ```
a. The program has a compile error because String argv[] is wrong and it should be replaced by String[] args.
b. The program has a compile error because String args[] is wrong and it should be replaced by String args[].
c. If you run this program without passing any arguments, the program would have a runtime error because argv is null.
d. If you run this program without passing any arguments, the program would display argv.length is 0.

d The parameter for the main method is an array of String. The declaration String argv[] is correct. When you run the program without passing arguments, argv is new String[0]. Thus, argv.length is 0 . See the NOTE box in the section, "Passing Arguments to Java Programs."