Java
Java (not to be confused with JavaScript or JScript or JS) is a general-purpose object-oriented programming language designed to be used in conjunction with the Java Virtual Machine (JVM). "Java platform" is the name for a computing system that has installed tools for developing and running Java programs. Use this tag for questions referring to the Java programming language or Java platform tools.
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jdbc: Get the SQL Type Name from java.sql.Type code
I have an array with Field Names and jdbc Type codes. (Those int codes that you can find in http://download.
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Using a java library from python
I have a python app and java app. The python app generates input for the java app and invokes it on the comman
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How can I install various Python libraries in Jython?
I know that I can install Jython with Java and that I can use Jython where I use Python. The Jython shell is w
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log4j with timestamp per log entry
this is my log output INFO main digestemails - process inbox INFO main digestemails - checking for emails in
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Calling Python in Java?
I am wondering if it is possible to call python functions from java code using jython, or is it only for calli
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Even though JRE 8 is installed on my MAC -" No Java Runtime present,requesting to install " gets displayed in terminal
Even though JRE 8 is installed on my MAC OS Yosemite 10.10.3,while running the Android present in tools in
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JAVA_HOME is set to an invalid directory:
I have set JAVA_HOME in my system C:\Program Files\Java\jdk1.8.0_ 131\bin; and I am trying to run cordova comm
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javax.websocket client simple example
Can someone please provide me very simple example of websocket client using javax.websocket? I want to connec
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How to use Servlets and Ajax?
I'm very new to web apps and Servlets and I have the following question: Whenever I print something insi
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How to print binary tree diagram in Java?
How can I print a binary tree in Java so that the output is like: 4 / \ 2 5 My node: public cla
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Get keys from HashMap in Java
I have a Hashmap in Java like this: private Map<String, Integer> team1 = new HashMap<String, Integer
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Why should I use Deque over Stack?
I need a Stack data structure for my use case. I should be able to push items into the data structure and I on
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Why doesn't java.util.Set have get(int index)?
I'm sure there's a good reason, but could someone please explain why the java.util.Set interface lac
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How to convert List to Map?
Recently I have conversation with a colleague about what would be the optimal way to convert List to Map in Ja
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How to detect a loop in a linked list?
Say you have a linked list structure in Java. It's made up of Nodes: class Node { Node next; //
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How to implement a tree data-structure in Java?
Is there any standard Java library class to represent a tree in Java? Specifically I need to represent the fo
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How can I convert a stack trace to a string?
What is the easiest way to convert the result of Throwable.getStackTrace() to a string that depicts the stackt
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What does "Could not find or load main class" mean?
A common problem that new Java developers experience is that their programs fail to run with the error message
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How do I create a Java string from the contents of a file?
I've been using the idiom below for some time now. And it seems to be the most wide-spread, at least on t
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How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version
I am trying to use Notepad++ as my all-in-one tool edit, run, compile, etc. I have JRE installed, and I have
