stackoverflow-Java-top-qa
对stackoverflow上Java相关、投票数TOP100的问答进行翻译，欢迎点star，我们会持续更新!!!
为了让“翻译”更有意义，给阅读者带来更多、更有效的收获，我们会有一些加工：
例如，对问题进行分类，整合多个答案、删除冗余内容、加上自己的验证结果、心得等等
对于参与翻译的人，这也是很好的一个学习、理解过程，欢迎大家一起来翻译
目录
基础语法
- Java += 操作符实质
- 将InputStream转换为String
- 将数组转换为List
- 如何遍历map对象
- public，protected，private，不加修饰符。有什么区别呢？
- 如何测试一个数组是否包含指定的值？
- 重写（Override）equlas和hashCode方法时应考虑的问题
- 从一个多层嵌套循环中直接跳出
- 如何将String转换为Int
- 如何分割（split）string字符串
- 在java中如何对比（compare）string
Map<Key,Value>基于Value值排序- `HashMap和Hashtable的区别
- 如何便捷地将两个数组合到一起
- Java 是否支持默认的参数值
- Java 产生指定范围的随机数
- JavaBean 到底是什么
- wait()和sleep()的区别
- 能否在一个构造器(
constructor)中调用另一个构造器 - 如何声明一个数组
- 如何避免在JSP文件中使用Java代码
编程技巧
网络
性能
测试
待翻译问题链接(还剩x问题)
- Why is subtracting these two times (in 1927) giving a strange result?
- Proper use cases for Android UserManager.isUserAGoat()?
- Creating a memory leak with Java [closed]
- Why is char[] preferred over String for passwords?
- Why is printing “B” dramatically slower than printing “#”?
- Is there a unique Android device ID?
- Why does this code using random strings print “hello world”?
- How can I create an executable jar with dependencies using Maven?
- Why is executing Java code in comments with certain Unicode characters allowed?
- Dealing with “java.lang.OutOfMemoryError: PermGen space” error
- “implements Runnable” vs. “extends Thread”
- Does finally always execute in Java?
- Convert a String to an enum in Java
- Android SDK installation doesn't find JDK
- Initialization of an ArrayList in one line
- Java inner class and static nested class
- 'Must Override a Superclass Method' Errors after importing a project into Eclipse
- Fastest way to determine if an integer's square root is an integer
- How to fix: Unsupported major.minor version 51.0 error?
- What is reflection and why is it useful?
- How to generate a random alpha-numeric string?
- Examples of GoF Design Patterns in Java's core libraries
- Comparing Java enum members: == or equals()?
- Failed to load the JNI shared Library (JDK)
- What's the simplest way to print a Java array?
- Why can't I switch on a String?
- How to create a Java String from the contents of a file?
- How can I convert a stack trace to a string?
- How do you assert that a certain exception is thrown in JUnit 4 tests?
- What exactly is Apache Camel?
- How can I permanently have line numbers in IntelliJ?
- How do servlets work? Instantiation, shared variables and multithreading
- Access restriction on class due to restriction on required library rt.jar?
- How can I Initialize a static Map?
- How do I discover memory usage of my application in Android?
- How can I generate an MD5 hash?
- Download a file with Android, and showing the progress in a ProgressDialog
- Uncatchable ChuckNorrisException
- Can I add jars to maven 2 build classpath without installing them?
- Update Eclipse with Android development tools v. 23
- Setting multiple jars in java classpath
- Iterating through a list, avoiding ConcurrentModificationException when removing in loop
- Is null check needed before calling instanceof
- How does the Java for each loop work?
- What is the Java equivalent for LINQ?
- Hibernate hbm2ddl.auto possible values and what they do?
- Check if at least two out of three booleans are true
- How to round a number to n decimal places in Java
- How can I pad an integers with zeros on the left?
- Sort ArrayList of custom Objects by property
- What's the difference between @Component, @Repository & @Service annotations in Spring?
- Why is Java Vector class considered obsolete or deprecated?
- Efficiency of Java “Double Brace Initialization”?
- Why does this go into an infinite loop?
- When and how should I use a ThreadLocal variable?
- decompiling DEX into Java sourcecode
- How to create a generic array in Java?
- Why does Math.round(0.49999999999999994) return 1
- Eclipse: Set maximum line length for auto formatting?
- What is the difference between a soft reference and a weak reference in Java?
- How to create a file and write to a file in Java?
- What is the equivalent of the C++ Pair<L,R> in Java?
- What is the difference between JSF, Servlet and JSP?
- How do I “decompile” Java class files?
- Useful Eclipse Java Code Templates [closed]
- Which @NotNull Java annotation should I use?
- How to call SOAP web service in Android
contributors
thx a lot:)
more link
To Be Continue ...
giantray
Email: lizeyang@foxmail.com
Blog: http://blog.csdn.net/lizeyang
2015-08-18 于珠海