Java异常和Catch子句(Java Exceptions and Catch Clause)

 这是我为测试编写的一些简单代码。 
 我知道我无法定义一个catch块来捕获一个检查异常，即try块中的代码没有声明要抛出（因为它包含无法访问的语句而编译器不会让我）。 
 
 那么，这里到底发生了什么？ （java.io.InvalidClassException是Exception的子类，因此它是一个经过检查的异常。） 
 
import java.util.*;
import java.io.*;

class Test {

  public void copy()  {
    try (InputStream is=new FileInputStream("file1");
         OutputStream os=new FileOutputStream("file2");) {
      byte[] buffer=new byte[1024];
      int bytesRead=0;
      while ((bytesRead=is.read(buffer)) != -1) {
        os.write(buffer,0,bytesRead);
      }
    }
    catch (java.io.InvalidClassException e) {
      e.printStackTrace();
    }
    catch (IOException e) {
      e.printStackTrace();
    }
  }

}
 
 代码编译得很好......怎么可能？ 

Here is some simple code I was writing for a test.
 I know that I can't define a catch block that catches a checked exception that the code in the try block doesn't declare to throw (because it would contain unreachable statements and the compiler won't let me).
 
So, what is happening here exactly? (java.io.InvalidClassException is a subclass of Exception and so it's a checked exception.)
 
import java.util.*;
import java.io.*;

class Test {

  public void copy()  {
    try (InputStream is=new FileInputStream("file1");
         OutputStream os=new FileOutputStream("file2");) {
      byte[] buffer=new byte[1024];
      int bytesRead=0;
      while ((bytesRead=is.read(buffer)) != -1) {
        os.write(buffer,0,bytesRead);
      }
    }
    catch (java.io.InvalidClassException e) {
      e.printStackTrace();
    }
    catch (IOException e) {
      e.printStackTrace();
    }
  }

}
 
The code compiles fine... How is that possible??

原文：https://stackoverflow.com/questions/35088722