javaCompiling

1. java编译

2. 连接

3. 打包

4. 运行原理

5. 热升级

6. java javac jar javap javah javadoc jdb

7. try catch finally

   编译前
   try {
        return 1;
      } catch(Exception e) {
        return 2;
      } finally {
        return 3;
      }
   ------
   编译后
   try {
            boolean e = true;
            return 3;
        } catch (Exception var6) {
            boolean var2 = true;
            return 3;
        } finally {
            ;
        }