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What is the difference between java's throw and throws

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Release: 2023-05-03 14:04:06
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1. Throw is a statement that throws an exception. It is usually located inside a code block. When a certain logic error occurs in the program, the programmer will actively throw a specific type of exception. This is determined based on the program logic. Which exception is thrown manually. throws is a method that may issue an exception statement.

     public void list() {
        if (head.next == null) {
        throw new RuntimeException("当前链表为空");
     }
   }
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2. Throws appears in the method function header, and throw appears in the function header.

 public static void sparseToFile() throws IOException {
  }
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