package com.Summer_0419.cn; /** * @author Summer * 用return关键字实现1——100累加求和,返回总和并接收输出 */ public class Test_Method03 { public static void main(String[] args) { int sum = add();//用sum作为接收返回值的变量,调用方法开始累加求和操作 System.out.println("1-100的累加求和的结果为"+sum);…
bug类型: 1.".equals()" should not be used to test the values of "Atomic" classes. bug 主要 不要使用equals方法对AtomicXXX进行是否相等的判断 Atomic变量永远只会和自身相等,Atomic变量没有覆写equals()方法.2."=+" should not be used instead of "+=" bug…
bug类型: 1.".equals()" should not be used to test the values of "Atomic" classes. bug 主要 不要使用equals方法对AtomicXXX进行是否相等的判断 Atomic变量永远只会和自身相等,Atomic变量没有覆写equals()方法.2."=+" should not be used instead of "+=" bug 主要 "…
1.Abbreviation As Word In Name (默认 关闭)坏味道 主要检查验证标识符名称中的缩写(连续大写字母)长度,还允许执行骆驼案例命名allowedAbbreviationLength 3 6.Annotation Location (默认 关闭)坏味道 主要注释位置allowSamelineSingleParameterlessAnnotationTo allow single parameterless annotation to be located on the…
Linux kernel coding style | Linux内核编码风格 This is a short document describing the preferred coding style for the linux kernel. Coding style is very personal, and I won't force my views on anybody, but this is what goes for anything that I have to be ab…
一.堆溢出 在执行代码时通过设置堆的最小值-Mms以及堆的最大值-Mmx来控制堆的大小,-XX参数dump出堆内存快照以便对内存溢出进行分析.通过创建大量对象来使堆溢出,当堆内存溢出时会提示OutOfMemeoryError:Java heap space信息. import java.util.List; import java.util.ArrayList; public class HeapOOM { static class OOMObject{} public static void…
Hibernate的所有session都是由sessionFactory来生成的,那么,sessionFactory是怎么得来的呢?它与我们配置的xxx.cfg.xml文件以及xxx.hbm.xml文件之间又有着怎么样的联系呢? 先看一小段生成sessionFactory的代码: code_1: public class HibernateTest { @Test public void test() { System.out.println("test..."); //1. 创建一个…
106. Examine the data inthe LIST_PRICE and MIN_PRICE columns of the PRODUCTS table: LIST_PRICE MIN_PRICE 10000 8000 20000 30000 30000 Which two expressionsgive the same output? (Choose two.) A. NVL(NULLIF(list_price, min_price), 0) B. NVL(COALESCE…
https://www.kernel.org/doc/Documentation/zh_CN/CodingStyle Chinese translated version of Documentation/CodingStyle If you have any comment or update to the content, please post to LKML directly.However, if you have problem communicating in English yo…
What is a namespace? A namespace defines an area of code in which all identifiers are guaranteed to be unique. By default, all variables and functions are defined in the global namespace. For example, take a look at the following snippet: 1 2 3 4 5 i…
