To learn Java or any other programming language, the only best way is to practice and practice more. The more you do the coding, the better you get as time passes. These listed Java examples cover some very basic Java fundamentals and present you few alternative solutions to any single prob...
Below are a few examples of how Optional should be created and used in the application code. 4.1. Creating Optional There are 3 commonly used ways to create an Optional. UsingOptional.empty() to create empty optional. Optional<Integer> possible = Optional.empty(); Using Optional.of() to ...
else, switch, and loops like for, while, and do-whileare available in Java. These features will enable the implementer to perform the execution of blocks depending on a specific condition or repetition of a block very efficiently.
For examples, see floorDiv(int, int). Parameters: x - the dividend y - the divisor Returns: the largest (closest to positive infinity) long value that is less than or equal to the algebraic quotient. Throws: ArithmeticException - if the divisor y is zero Since: 1.8 See Also: floorMod(...
Java 8 has introduced forEach method injava.lang.Iterableinterface so that while writing code we focus on business logic. The forEach method takes java.util.function.Consumer object as an argument, so it helps in having our business logic at a separate location that we can reuse. Let’s se...
Last update on March 26 2025 14:44:00 (UTC/GMT +8 hours) This resource offers a total of 70 Java Encapsulation problems for practice. It includes 14 main exercises, each accompanied by solutions, detailed explanations, and four related problems. ...
Last update on March 26 2025 14:48:09 (UTC/GMT +8 hours) This resource offers a total of 50 Java Inheritance problems for practice. It includes 10 main exercises, each accompanied by solutions, detailed explanations, and four related problems. ...
Now real question is How to Avoid java.lang.NullPointerException atRuntime? In this tutorial we will look at fewexampleswhich creates NPE at runtime and steps we need to perform in order to resolve this. Let’s create NPE at runtime 1st. Take a look at below exampleCrunchifyNullP...
In the single parameter version, values that share the same key are organised into a generic list, where as in the two parameter version we can specify the collection type for the values. So we’ve seen plenty of Hello World style examples, but I think I owe you something that’s a ...
Java Platform Enterprise Edition (Java EE), the standard in community-driven enterprise software, is developed using the Java Community Process.