This example shows how to handle the empty stack exception by using s.empty(),s.pop() methods of Stack class and System.currentTimeMillis()method of Date class .
import java.util.Date;
import java.util.EmptyStackException;
import java.util.Stack;
public class ExceptionalTest {
public static void main(String[] args) {
int count = 1000000;
Stack s = new Stack();
System.out.println("Testing for empty stack");
long s1 = System.currentTimeMillis();
for (int i = 0; i <= count; i++)
if (!s.empty())
s.pop();
long s2 = System.currentTimeMillis();
System.out.println((s2 - s1) + " milliseconds");
System.out.println("Catching EmptyStackException");
s1 = System.currentTimeMillis();
for (int i = 0; i <= count; i++) {
try {
s.pop();
}
catch (EmptyStackException e) {
}
}
s2 = System.currentTimeMillis();
System.out.println((s2 - s1) + " milliseconds");
}
}
Result:
The above code sample will produce the following result.
Testing for empty stack
16 milliseconds
Catching EmptyStackException
3234 milliseconds