Tutorial by Topics: java

. let's you access instance methods .- let's you access instance fields .. macro expanding to multiple nested invocations of . As a hosted language, Clojure provides excellent interoperability support with Java. Clojure code can also be called directly from Java.

This topic outlines some of the common mistakes made by beginners in Java. This includes any common mistakes in use of the Java language or understanding of the run-time environment. Mistakes associated with specific APIs can be described in topics specific to those APIs. Strings are a special cas...

HBaseConfiguration.create(); //Create a configuration file Configuration.set(String key, String value); //Add a key to the configuration ConnectionFactory.createConnection(HBaseConfiguration configuration); //Connects to HBase Connection.getAdmin(); //Instanciate a new Admin ...

The javac command is used for compiling Java source files to bytecode files. Bytecode files are platform independent. This means that you can compile your code on one kind of hardware and operating system, and then run the code on any other platform that supports Java. The javac command is inc...

This documentation page gives access to instructions for installing java standard edition on Windows, Linux, and macOS computers.

Several Java programming language misusage might conduct a program to generate incorrect results despite being compiled correctly. This topic main purpose is to list common pitfalls related to exception handling, and to propose the correct way to avoid having such pitfalls.

Several Java programming language misusage might conduct a program to generate incorrect results despite being compiled correctly. This topic main purpose is to list common pitfalls with their causes, and to propose the correct way to avoid falling in such problems. This topic is about specifi...

This topic describes a number of "pitfalls" (i.e. mistakes that novice java programmers make) that relate to Java application performance. This topic describes some "micro" Java coding practices that are inefficient. In most cases, the inefficiencies are relatively small, ...

JTOpen links https://gist.github.com/phpdave/52d6d8f135181a042901b2918141f82a#file-zdocumentation-md

The value null is the default value for an uninitialized value of a field whose type is a reference type. NullPointerException (or NPE) is the exception that is thrown when you attempt to perform an inappropriate operation on the null object reference. Such operations include: calling an inst...

java [ <opt> ... ] <class-name> [ <argument> ... ] java [ <opt> ... ] -jar <jar-file-pathname> [ <argument> ... ] The java command is used for running a Java application from the command line. It is available as a part of any Java SE JRE or JDK....