Core java

In this post, we will see how to convert List to Map using Stream in java 8. Collectors’s toMap() can be used with stream to convert List to Map in java. Consider a class Named Movie which have 3 fields – id, name and genre [crayon-6741ea07a93c3299025951/] Create a list of movies and convert with to […]

In this post, we will see how to sort a list with Stream.sorted() method. Java 8 has introduced Stream.sort() method to sort list of elements conveniently. It helps us to write short and concise functional style code rather than boilerplate code. java.util.Stream has two overloaded versions of sorted() method. sorted(): Returns a stream having elements […]

In this post, we will see how to add character to String in java. There are multiple ways to add character to String. Add character to the start of String You can add character at start of String using + operator. [crayon-6741ea07ab29f255427496/] Add character to the end of String You can add character at start […]

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Java 8 has introduced a lot of new features such as lambda expressions, stream, Method references etc. In this post, we will see what are Method references and how can we use it. I will try to provide more examples rather than theory. 1. Introduction to Method Reference Method references are special types of lambda […]

In this post, we will see how to solve Cannot find symbol in java. You will get this error when you have declared something that compiler does not understand. The compiler creates list of identifiers when you compile any program. If compile can not understand any of the identifiers, you will get this error. This […]

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