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Core java

  • HashMap Java Collections HashMap
    04 May

    How HashMap works in java

    Most common interview questions are <code>How HashMap works in java</code>, “How get and put method of HashMap work internally”. Here I am trying to explain internal functionality with an easy example. [crayon-6043232be1466100502890-i/]  is one of the most used Collections in java.Rather than going through theory, we will start with example first, so that you will […]

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  • Escape double quotes in String in Java
    String
    19 January

    How to escape double quotes in String in java

    In this post, we will see how to escape double quotes in String in java. There are scenarios where you need to escape double quotes already present in the String. This generally happens while dealing with JSON file format or reading file data. Escape double quotes in java Double quotes characters can be escaped with […]

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  • Convert Date to LocalDate in java
    Conversion Java 8 Java Date
    12 January

    Java Date to LocalDate

    In this post, we will see how to convert Date to LocalDate in java. Sometimes, we may need to convert Date to new Java 8 APIs and vice versa. There are multiple ways to convert Date to LocalDate in java. Read also: Convert LocalDate to Date in java Using toInstant() method of Date class You […]

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  • Convert LocalDate to Date in java
    Conversion Java 8 Java Date
    11 January

    Java LocalDate to Date

    In this post, we will see how to convert LocalDate to Date. Java 8 has introduced a lot of new APIs for Date and time. There can be many ways to convert Java LocalDateTime to date. Using Instant object You can convert LocalDate to Date using Instant object which we can from Zone. Here is […]

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  • Intellij
    04 January

    How to change java version in intellij

    Learn about how to change java version in intellij.

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  • Intellij
    03 January

    Generate SerialVersionUID in Intellij

    Learn about how to generate SerialVersionUID in Intellij using different ways.

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  • Intellij
    02 January

    System.out.println shortcut in intellij

    Learn about System.out.println shortcut in intellij.

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  • Core java
    02 January

    System.out.println shortcut in eclipse

    Learn about System.out.println shortcut in eclipse.

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  • Convert Stream to List in java
    Java 8 Core Java interview
    31 December

    Java Stream to List

    In this post, we will see how to convert Stream to List in java. There are multiple ways to convert Stream to List in java. Using Collectors.toList() You can pass Collectors.toList() to Stream.collect() method to convert Stream to List in java. Stream’s collect method performs mutable reduction operation on elements of Stream and Collectors.toList() provides […]

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  • Error
    30 December

    [Solved] Class names are only accepted if annotation processing is explicitly requested

    Learn about how to fix class names are only accepted if annotation processing is explicitly requested in java.

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