try {
normal statement; //1.
exception occurred; //2.
return "try";
} catch (Exception ex) {
normal statement; //3.
return "catch";
} finally {
normal statement; //4.
return "finally"; //5. -->End
}try {
normal statement; //1.
exception occurred; //2.
return "try";
} catch (Exception ex) {
normal statement; //3.
return "catch"; //5. -->End
} finally {
normal statement; //4.
}try {
normal statement; //1.
exception occurred; //2.
return "try";
} catch (Exception ex) {
normal statement; //3.
throw Exception;
} finally {
normal statement; //4.
return "finally"; //5. -->End
}try {
normal statement; //1.
exception occurred; //2.
return "try";
} catch (Exception ex) {
normal statement; //3.
throw Exception;
} finally {
normal statement; //4.
throw Exception; //5. -->End
}try {
normal statement; //1.
exception occurred; //2.
return "try";
} catch (Exception ex) {
normal statement; //3.
throw Exception; //5. -->End
} finally {
normal statement; //4.
}結論：
1、Try-catch-finally中的finally一定會執行，而且，一定優先於try/catch中的return/throw語句執行，除非系統崩了或者程序使用System.exit(0)強行終止；
2、finally中如果有return或throw，則優先處理finally中的return/throw；
3、return和throw，從語句流轉的角度上看，這兩個語句是等效的；
4、finally中沒有return或throw，則程序會回溯到try/catch中執行return/throw語句。如果當初是catch=>finally，則回溯到catch中執行return/throw；如果是try=>finally，則回溯到try中執行return/throw；如果try/catch中都不存在return/throw，則跳出try-catch-finally語句體繼續執行後續代碼。