Java异常捕获之一道try-catch-finally语句题

今天，学习了try-catch-finally语句，本来觉得蛮简单、易懂的。搜了一道相关类型的题。结果信心被泼了盆冷水。先把题Mark一下，出去透透风。

 public class TestEx {
     private int c;

     public TestEx() {
     }

     @SuppressWarnings("finally")
     boolean testEx() throws Exception {
         boolean ret = true;
         try {
             ret = testEx1();
         } catch (Exception e) {
             System.out.println("testEx, catch exception");
             ret = false;
             throw e;
         } finally {
             System.out.println("testEx, finally; return value=" + ret);
             return ret;
         }
     }

     @SuppressWarnings("finally")
     boolean testEx1() throws Exception {
         boolean ret = true;
         try {
             ret = testEx2();
             if (!ret) {
                 return false;
             }
             System.out.println("testEx1, at the end of try");
             return ret;
         } catch (Exception e) {
             System.out.println("testEx1, catch exception");
             ret = false;
             throw e;
         } finally {
             System.out.println("testEx1, finally; return value=" + ret);
             return ret;
         }
     }

     @SuppressWarnings("finally")
     boolean testEx2() throws Exception {
         boolean ret = true;
         try {
             int b = 12;
             for (int i = 2; i >= -2; i--) {
                 setC(b / i);
                 System.out.println("i=" + i);
             }
             return true;
         } catch (Exception e) {
             System.out.println("testEx2, catch exception");
             ret = false;
             throw e;
         } finally {
             System.out.println("testEx2, finally; return value=" + ret);
             return ret;
         }
     }

     public static void main(String[] args) {
         TestEx testException1 = new TestEx();
         try {
             testException1.testEx();
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     public int getC() {
         return c;
     }

     public void setC(int c) {
         this.c = c;
     }
 }

Output：

看完之后我就在想，

1.Java异常处理机制，我真的理解了吗？

2.Java异常处理，我真的掌握了吗？

3.catch体里遇到return 是怎么处理？

4.finally 体里有return怎么处理？

5. catch 和 finally 体里同时遇上 return 怎么办？

6.是不是还有个System.exit()？遇到它又咋办？？

7.仅仅知道throws不是完全之策啊，还要继续深入理解啊。2017-06-1918:21:08