How to Iterate a HashMap in Java
A HashMap in Java stores items in the form of “key/value” pairs. It can be iterated with the help of “for” loop, “foreach()” method, or the “Iterator” object.
Read MoreHow to Find the Second Largest Number in an Array in Java
To find the second largest number in an array in Java, we can use “iterative method” as well as “array.sort()” method and print out second largest number.
Read MoreHow to Convert an Integer to Binary in Java
An integer can be converted into binary by applying the “Integer.toBinaryString()” method, the “Integer.toString()” method, or the “Long Division” approach.
Read MoreHow to Resolve the java.lang.NullPointerException
java.lang.NullPointerException is handled via try/catch or if/else statements. It occurs when reference variable is invoked and is not pointing to object.
Read MoreHow to Resolve the java.lang.NullPointerException
java.lang.NullPointerException is handled via try/catch or if/else statements. It occurs when reference variable is invoked and is not pointing to object.
Read MoreHow to Initialize an Array in Java
An array in Java can be initialized without assigning values, after declaration, or with both the integer and string values.
Read MoreHow to Generate Random Numbers in Java
To generate random numbers in Java, use the “Math.random()” method, the “java.util.Random” class, or the “ThreadLocalRandom” class.
Read MoreHow to Install Tomcat 10 on Ubuntu 22.04
Apache Tomcat is an open-source web server and Java servlet container. Learn how to install and configure it on Ubuntu 22.04.
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CI Fuzz CLI: Open-Source Tool to Test Java Apps
CI Fuzz CLI allows Java developers to easily incorporate fuzz testing into their existing JUnit setup to find functional bugs and security vulnerabilities at scale.
The post CI Fuzz CLI: Open-Source Tool to Test Java Apps appeared first on Linux Today.
How to Install and Use Java JDK on Debian 11
Java is one of the most popular programming languages. In this tutorial, we will show you how to install Java along with OpenJDK and its corresponding JRE and JDK on Debian 11.
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How to Install GlassFish Java Application Server on Rocky Linux
GlassFish is a free and open-source implementation of the Java EE Platform developed by Eclipse. In this tutorial, we will install the GlassFish Java Application Server with Nginx reverse proxy on Rocky Linux.
The post How to Install GlassFish Java App…
Spring Dependency Injection
A guide on how to use the constructor-based spring dependency injection while learning its configuration by using Java annotations and XML.
Read MoreJava Getters and Setters
The is on the purpose of the getter and setter functions and on how the getter and setter functions are helpful in two different Java files.
Read MoreJava Array to List
This have employed the methods which java supports for converting the arrays into the list. From each method, we have obtained the Java list
Read MoreJava Logical OR
This is on the working of the logical operator. We have differentiated the AND operator and OR operators to demonstrate the functionality of each operator.
Read MoreHow do you Write a Javadoc Comment?
Javadoc Comments are usually known among Java developers and can be generated by the program’s JDK automatically, and you don’t need to create your comments.
Read MoreJava.Util.Date
“java.util.date” class has been well-known for finding out the date and time for the current timezone of your system. The “java.util.Date” class is discussed.
Read MoreHow to Import Classes in Java
A class is a combination of objects. This article explains the syntax of importing the user-defined custom classes and the built-in class in a java program.
Read MoreJava Substring
The java substring is a part of the java main string. As the java strings are immutable, the initial string is left unchanged.
Read MoreBest Java IDEs for Linux Developers
Java is a high-level, object-oriented, and general-purpose programming language. Learn about the best Java IDEs for Linux developers here.
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