How To Install Java on FreeBSD 10.1
Java is a popular software platform that allows you to run Java applications and applets.
Como instalar o Java com o Apt no Ubuntu 20.04
O Java e a JVM (máquina virtual do Java) são necessários para vários tipos de softwares, incluindo o Tomcat, Jetty, Glassfish, Cassandra e…
How To Use Maps in Java
URL: https://www.progressiverobot.com/how-to-use-maps-in-java/ *The author selected Free and Open Source Fund to receive a donation as part of the Write for DOnations program.* Introduction A map in Java is a group of entries, each with two linked parts – a key and a value. In essence, Map is an interface from the java.util package. To use […]
Java 10 Features
URL: https://www.progressiverobot.com/java-10-features/ Java 10 is the fastest release of a java version in its 23-year history. Java has been criticized for its slow growth and evolution, but Java 10 just shattered that concept. Java 10 is a release with many futuristic changes, the scope, and impact of which may not be obvious but are far-fetching. […]
Как установить Java с помощью Apt-Get в Ubuntu 16.04
Java и JVM (Виртуальная машина Java) широко используются в самом разном программном обеспечении. Эта статья описывает процесс установки и управления различными версиями Java с помощью утилиты apt-get. Для того, чтобы следовать инструкциям в этой статье,…
Java Convert String to double
URL: https://www.progressiverobot.com/java-convert-string-to-double/ Java String to double conversion can be done by many ways. Today we will look into some common ways to convert java string to double primitive data type or Double object. Note that since java supports autoboxing, double primitive type and Double object can be used interchangeably without any issues. Double d1 = […]
Java FutureTask Example Program
URL: https://www.progressiverobot.com/java-futuretask-example-program/ Sometime back I wrote a post about [Java Callable Future](/community/tutorials/java-callable-future-example) interfaces that we can use to get the concurrent processing benefits of threads as well as they are capable of returning value to the calling program. FutureTask is base concrete implementation of Future interface and provides asynchronous processing. It contains the methods to […]
Java NullPointerException – Detect, Fix, and Best Practices
URL: https://www.progressiverobot.com/java-lang-nullpointerexception/ java.lang.NullPointerException is one of the most popular [exceptions in java](/community/tutorials/exception-handling-in-java) programming. Anybody working in java must have seen this popping out of nowhere in the java standalone program as well as the [java web application](/community/tutorials/java-web-application-tutorial-for-beginners). java.lang.NullPointerException NullPointerException is a runtime exception, so we don’t need to catch it in the program. NullPointerException is raised in an […]
Java RandomAccessFile Example
URL: https://www.progressiverobot.com/java-randomaccessfile-example/ Java RandomAccessFile provides the facility to read and write data to a file. RandomAccessFile works with file as large [array of bytes](/community/tutorials/string-byte-array-java) stored in the file system and a cursor using which we can move the file pointer position. Java RandomAccessFile !Java RandomAccessFile, RandomAccessFile in java, Java RandomAccessFile read write append example RandomAccessFile […]
Java Spliterator
URL: https://www.progressiverobot.com/java-spliterator/ Java Spliterator is one of the four iterators – Enumeration, [Iterator](/community/tutorials/java-iterator), [ListIterator](/community/tutorials/java-listiterator) and Spliterator. Java Spliterator Like Iterator and ListIterator, Spliterator is a Java Iterator, which is used to iterate elements one-by-one from a [List](/community/tutorials/java-list) implemented object. Some important points about Java Spliterator are: Java Spliterator is an interface in [Java Collection](/community/tutorials/collections-in-java-tutorial) API. […]
