Core Java tutorial for beginners

This is the index post for Core Java tutorial for beginners as well as for experienced programmer. I have written Core Java tutorials from basic to advanced topics.It will definitely help you learn Java in …

Java Format number as currency

In this post, we are going to see how to format currency in java. We can format number into Currency by using NumberFormat class.We need to call NumberFormat.getInstance()  to get NumberFormat object by passing specified locale. …

Java String matches example

In this post, we are going to see String’s matches method. String’s matches method String matches method is used to check whether the string is matched with the given regular expression.In normal terms, we can …

Java Convert List to String

In this post, we will see how to convert List to String in java. Following are the ways to convert list into String: Using StringBuilder We can use StringBuilder class to convert List to String.StringBuilder …

Java Convert Array to List

In this post, we will see how to convert array to list in java. There are may ways to convert array to list: Table of ContentsBy using Arrays.asList():Using Collections.addAll() method :Using Java 8’s StreamManual way …

Java convert List to Array

There are many ways to convert List into Array: Table of ContentsUsing toArray() method Using Java 8’s StreamUsing Arrays.copyOfUsing System.arraycopyManual method Using toArray() method We can use toArray method to convert List to String. We …

5 SOLID Principles in Java

In this post, we will see 5 SOLID Principles in Java. Robert C. Martin gave five objected oriented design principles, and the acronym “S.O.L.I.D” is used for it. Each letter of this acronym talks about principles …

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