JAVA高级面试进阶训练营视频教程

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在Java编程中，如何处理空堆栈异常？

本例展示了如何使用Date类的System.currentTimeMillis()方法和Stack类的s.empty()，s.pop()方法来处理空堆栈异常。

package com.yiibai; import java.util.Date; import java.util.EmptyStackException; import java.util.Stack; public class EmptyStackExcept { 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"); } } 

Java

上述代码示例将产生以下结果 -

Testing for empty stack
46 milliseconds
Catching EmptyStackException
1561 milliseconds