Java 中是否可以有无 `catch` 块的 `try` 块？

可以，通过使用`final` 块，可以在没有 `catch` 块的情况下使用 `try` 块。

众所周知，`final` 块通常会执行，即使 `try` 块中出现异常，除非是 `System.exit()`， 它将始终执行。

示例 1

Open Compiler
public class TryBlockWithoutCatch {
   public static void main(String[] args) {
      try {
         System.out.println("Try Block");
      } finally {
         System.out.println("Finally Block");
      }
   }
}

输出

Try Block
Finally Block

`final` 块总是会执行，即使方法有返回值类型且 `try` 块返回一些值。

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示例 2

Open Compiler
public class TryWithFinally {
   public static int method() {
      try {
         System.out.println("Try Block with return type");
         return 10;
      } finally {
         System.out.println("Finally Block always execute");
      }
   }
   public static void main(String[] args) {
      System.out.println(method());
   }
}

输出

Try Block with return type
Finally Block always execute
10

更新于: 2023-11-21

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