Java异常处理的缺陷

Java的异常处理同样存在着瑕疵.(读Thinking in Java Found Edition有感)

实例一

package edu.dlut.zxf.test;

class VeryImportantException extends Exception {
    public String toString() {
        return "A very important exception!";
    }
}

class AnotherException extends Exception {
    public String toString() {
        return "Another Exception";
    }
}

public class LostMessageTest {
    public void f() throws VeryImportantException {
        throw new VeryImportantException();
    }
    
    public void g() throws AnotherException {
        throw new AnotherException();
    }
    
    public static void main(String[] args) {
        LostMessageTest test = new LostMessageTest();
        try {
            try {
                test.f(); //抛弃的异常VeryImportantException没有被catch

            } finally {
                test.g();
            }
        } catch(Exception e) {
            System.out.println(e.toString()); //此处catch的是AnotherException

        }
    }
}
/* Output:
Another Exception
*/

实例二

package edu.dlut.zxf.test;

public class LostMessageTest2 {
    public static void main(String[] args) {
        try {
            throw new Exception();
        } finally {
            return;
        }
    }
}