xzbaimildcat的专栏

From Thinking in Java.Java's object serializationallows you to take any object that implements theSerializableinterface and turn it into a sequence of bytes that can later be fully restored

http://www.programcreek.com/2011/07/java-equals-and-hashcode-contract/The Java super classjava.lang.Object has two very important methods defined:public boolean equals(Object obj)publi

An immutable class is one whose state can not be changedonce created. There are certain guidelines to create an class immutable. Inthis post, we will revisit these guidelines.Sections:Benefits

In thispost, i will point out my understanding about hashCode() and equals() method. Iwill talk about their default implementation and how to correctly overridethem. I will also write about implemen

ReentrantLock in Java is added on java.util.concurrent package in Java 1.5along with other concurrentutilities like CountDownLatch, Executors and CyclicBarrier.ReentrantLock is one of the most

ThreadLocal in Java is another way to achieve thread-safety apart from writing immutable classes.If you have been writing multi-threaded or concurrent code in Java then you must be familiar with c

Annotation is code about the code, that is metadata about the program itself. In other words, organized data about the code, embedded within the code itself. It can be parsed by the compiler, annotati

http://www.devmanuals.com/tutorials/java/JavaTestingTools/junit/AnnotationsInJUnit.htmlhttps://github.com/junit-team/junit/wiki/Getting-started Annotations are like meta-tags that you can add to

简单说：实现Camparable接口可以直接使用sort方法Collections.sort(List list)排序实现Comparator接口的可以用Collections.sort(List list, Comparator c)排序一个类实现了Camparable接口则表明这个类的对象之间是可以相互比较的，这个类对象组成的集合就可以直接使用sort方法排序。Comp

java.lang.Object java.lang.Throwable   java.lang.Exception     java.lang.RuntimeException       java.lang.NullPointerException public class NullPointerException extends RuntimeExceptionT

http://www.java2s.com/Tutorial/Java/0060__Operators/TheinstanceofKeyword.htmThe instanceof keyword can be used to test if an object is of a specified type.public class MainClass { public s

*2.Java String split example.3.This Java String split example describes how Java String is split into multiple4.Java String objects.5.*/6. 7.public class JavaStringSplitExample{8.

Links to learn Java1. http://www.tutorialspoint.com/java/2. http://www.javabeginner.com/3. http://www.roseindia.net/javatutorials/4. http://docs.oracle.com/javase/1.5.0/docs/guide/language/ind

http://www.ibm.com/developerworks/cn/education/java/j-jni/section2.html概述当无法用 Java 语言编写整个应用程序时，JNI 允许您使用本机代码。在下列典型情况下，您可能决定使用本机代码：希望用更低级、更快的编程语言去实现对时间有严格要求的代码。希望从 Java 程序访问旧代码或代码库。需要标准 Jav

the default serialization mechanism is trivial to use. But what if you have special needs? Perhaps you have special security issues and you don’t want to serialize portions of your object, or perhaps

the hierarchy of the file stream in java