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Optional Methods in Java Interface
From my understanding if you implement an interface in java, the methods specified in that interface have to be used by the sub classes implementing the said interface.
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Java associative-array
How can I create and fetch associative arrays in Java like I can in PHP?
15 Answers
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Coding Conventions - Naming Enums
Is there a convention for naming enumerations in Java?
7 Answers
7
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
...ogle App Engine Web Application Project on Eclipse Kepler on Mac OS X with java version "1.7.0_45"
2 Answers
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CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
...不被包含在正文行的高度里。
DT_INTERNAL：用系统字体来计算正文度量。
DT_LEFT：正文左对齐。
DT_MODIFYSTRING：修改给定的字符串来匹配显示的正文，此标志必须和DT_END_ELLIPSIS或DT_PATH_ELLIPSIS同...
How can I get a java.io.InputStream from a java.lang.String?
I have a String that I want to use as an InputStream . In Java 1.0, you could use java.io.StringBufferInputStream , but that has been @Deprecrated (with good reason--you cannot specify the character set encoding):
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What is the equivalent of the C++ Pair in Java?
Is there a good reason why there is no Pair<L,R> in Java? What would be the equivalent of this C++ construct? I would rather avoid reimplementing my own.
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Error: Could not find or load main class in intelliJ IDE
I'm a beginner in Java and am trying to run my code using IntelliJ that I just installed as my IDE with JDK 1.7. The following piece of code keeps does not even compile and keeps giving me the error:
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Long vs Integer, long vs int, what to use and when?
...e you need to make use of methods inherited from Object, such as hashcode. Java.util.collections methods usually use the boxed (Object-wrapped) versions, because they need to work for any Object, and a primitive type, like int or long, is not an Object.
Another difference is that long and int are p...
How can I read input from the console using the Scanner class in Java?
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A simple example to illustrate how java.util.Scanner works would be reading a single integer from System.in. It's really quite simple.
Scanner sc = new Scanner(System.in);
int i = sc.nextInt();
To retrieve a username I would probably use sc.nextLine().
Sys...