Java Tutorials


Java Text Blocks

Text Blocks in Java provide a more readable and convenient way to write multi-line strings. They were introduced to simplify […] Continue reading »

Arrays.asList() vs. List.of() in Java

List.of and Arrays.asList are both used to create lists in Java, but they have some differences: 1. List.of() Introduced in […] Continue reading »

Stream reduce() vs. collect() in Java 8

In Java 8, the Stream.reduce() and Stream.collect() methods are used for performing reduction operations, but they are intended for different […] Continue reading »

Java Varargs

In Java, varargs (short for variable arguments) allow you to pass a variable number of arguments to a method. This […] Continue reading »

Find the closest pair from Array to a target value in Java

Java- Find the closest pair from Array: In this blog, we’ll explore a common problem in algorithm development: finding the […] Continue reading »

Java: Difference between HashMap and Hashtable

HashMap and Hashtable are both key-value data structures in Java, but they differ in synchronization, null handling, and performance. In […] Continue reading »

Java- Find first and all non-repeated characters from String

In Java, to find the first and all non-repeated characters from a string, you can use the following code: NonRepeatedChar.java […] Continue reading »

Runnable vs. Callable Interface in Java

In Java, both Runnable and Callable are interfaces used to define tasks that can be executed by threads or executors. […] Continue reading »

Sort even and odd numbers in ascending & descending order in Java

To sort even and odd numbers in ascending and descending order in Java, you can utilize Java 8 features and […] Continue reading »

Java- Sort Even Number First and Maintain the Order

Sort Even Number First and Maintain the Order in Java: You have an array of integers with mixed numbers i.e. […] Continue reading »

Java Pattern Matching for Switch

Java 17 brings a new language feature called Pattern Matching for Switch as a preview. This feature allows case labels […] Continue reading »

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