摘要：
Aggregation (HAS-A) HAS-A relationship is based on usage, rather than inheritance. In other words, class A has-a relationship with class B, if code in 阅读全文
posted @ 2016-06-26 23:28
morningdew
阅读(325)
评论(0)
推荐(0)
摘要：
Inheritance (IS-A) when a class extends another another class it inherits all non private members including fields and methods. Inheritence in Java ca 阅读全文
posted @ 2016-06-26 23:24
morningdew
阅读(259)
评论(0)
推荐(0)
摘要：
reference: http://www.studytonight.com/java/modifier-in-java.php Modifiers are keywords that are added to change meaning of a definition. In java, mod 阅读全文
posted @ 2016-06-26 23:12
morningdew
阅读(562)
评论(0)
推荐(0)
摘要：
Garbage Collection In Java destruction of object from memory is done automatically by the JVM. When there is no reference to an object, then that obje 阅读全文
posted @ 2016-06-26 21:13
morningdew
阅读(254)
评论(0)
推荐(0)
摘要：
A class can have only public or default(no modifier) access specifier. It can be either abstract, final or concrete (normal class). It must have the c 阅读全文
posted @ 2016-06-26 20:40
morningdew
阅读(289)
评论(0)
推荐(0)
摘要：
In Java, Data types are classified into two categories: 1. Primitive Data Type 2. Non-Primitive Data Type there are 8 primitive data types: char boole 阅读全文
posted @ 2016-06-26 20:05
morningdew
阅读(200)
评论(0)
推荐(0)
摘要：
参考： http://www.cnblogs.com/java-chl/p/5614940.html http://www.studytonight.com/java/component-of-java.php JVM 生命周期 程序开始执行它才运行，程序结束时它就停止。一台机器上运行几个程序就有几 阅读全文
posted @ 2016-06-26 16:09
morningdew
阅读(238)
评论(0)
推荐(0)
摘要：
此文参考： http://www.cnblogs.com/liu-5525/p/5614463.html http://www.studytonight.com/java/abstract-class.php http://www.studytonight.com/java/java-interfa 阅读全文
posted @ 2016-06-26 15:17
morningdew
阅读(280)
评论(0)
推荐(0)
摘要：
此文参考： http://www.cnblogs.com/liu-5525/p/5614425.html 1. classLoader 如何加载 class ClassLoader 负责将 .class 文件(可能在disk上，可能在网络上) 加载到 RAM 里面, 并为之生成对应的 [java.l 阅读全文
posted @ 2016-06-26 13:29
morningdew
阅读(170)
评论(0)
推荐(0)
浙公网安备 33010602011771号