stackoverflow-Java-top-qa
对stackoverflow上Java相关、投票数TOP100的问答进行翻译
翻译过程中，会有自己的一些加工，例如整合多个答案、删除冗余的文字、加上自己的验证心得等等
欢迎大家一起来翻译
目录
基础语法
- Java是按值传递还是按引用传递
- 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？
- 如何判断数组Array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
编程技巧
网络
性能
待翻译问题链接(还剩x问题)
- Why is processing a sorted array faster than an unsorted array?
- Why is subtracting these two times (in 1927) giving a strange result?
- Proper use cases for Android UserManager.isUserAGoat()?
- Differences between HashMap and Hashtable?
- Creating a memory leak with Java [closed]
- Why is char[] preferred over String for passwords?
- Generating random integers in a range with Java
- Why is printing “B” dramatically slower than printing “#”?
- What is a serialVersionUID and why should I use it?
- Is there a unique Android device ID?
- How to test a class that has private methods, fields or inner classes
- Why does this code using random strings print “hello world”?
- How can I create an executable jar with dependencies using Maven?
- How to avoid Java code in JSP files?
- In Java, how can I test if an Array contains a certain value?
- 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
- How do I call one constructor from another in Java?
- 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
- How do I compare strings in Java?
- How to sort a Map<Key, Value> on the values in Java?
- Declare array in Java?
- 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)
- Does Java support default parameter values?
- How to concatenate two arrays in Java?
- 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?
- Why does Java have transient variables?
- 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 is a JavaBean exactly?
- 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
- Difference between wait() and sleep()
- 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
- How to split a string in Java
- 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?
- What is an efficient way to implement a singleton pattern in Java?
- 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