JAVA Collections Tutorials

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  • How ArrayList works internally in Java

    This post talks about how ArrayList works internally in Java
    http://netjs.blogspot.in/2015/08/how-arraylist-works-internally-in-java.html
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  • How to loop through a HashMap

    A brief post about how to iterate a HashMap using iterator, For-Each loop and For-Each with Lambda expression in Java 8
    http://netjs.blogspot.com/2015/05/how-to-loop-iterate-hash-map-in-java.html
    • 31924 Hits
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  • How HashMap internally works in Java

    This tutorial talks about how HashMap works internally, how key, value pair is stored
    http://netjs.blogspot.in/2015/05/how-hashmap-internally-works-in-java.html
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  • Vector vs ArrayList in Java

    Difference between Vector and ArrayList is one of the oldest Java Interview question. Though Vector has been outdated from long time, I still see this
    http://java67.blogspot.com/2012/09/arraylist-vs-vector-in-java-interview.html
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  • How to use CopyOnWriteArrayList in Java

    CopyOnWriteArrayList was added in JDK 1.5 but not many programmer are aware of this handy implementation of List interface. It is very useful in concu
    http://java67.blogspot.com/2012/09/what-is-copyonwritearraylist-in-java-example-vs-arrayli...
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  • Java Design Pattern Questions for Experienced Programmers

    Design patterns are very important from interview point of view but same time they also offer learning opportunity. This list is collection of some go
    http://java67.blogspot.sg/2012/09/top-10-java-design-pattern-interview-question-answer.html
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  • TreeSet vs HashSet in Java

    Both TreeSet and HashSet implements Set interface but they are quite different to each other. In order to use them effectively, knowing difference bet
    http://java67.blogspot.in/2012/08/difference-between-hashset-and-treeset-java.html
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  • How to Iterate Over ArrayList in Java

    There are multiple ways to loop through ArrayList in Java, depending upon whether you want to loop through all elements or only some, you can either u
    http://java67.blogspot.com/2012/08/how-to-traverse-iterate-or-loop-ArrayList-in-java-examp...
    • 31619 Hits
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  • HashSet vs HashMap in Java

    In this article, we are comparing two of the most common Collection classes HashSet and HashMap in Java. Fundamental difference between HashSet and Ha
    http://java67.blogspot.com/2012/08/difference-between-hashset-and-hashmap.html
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  • java.util.HashMap in detail with a program

    HashMap is a class from java.util package and extends AbstractMap, implements Map,Cloneable and Serializable interfaces. HashMap contains Key,Value pa
    http://javabynataraj.blogspot.in/2014/09/javautilhashmap-in-detail-with-program.html
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  • Hashtable vs HashMap in Java

    Hashtable and HashMap are two of the most fundamental classes from Java Collections Framework. They both implement Map interface, earlier Hashtable us
    http://java67.blogspot.co.uk/2012/08/5-difference-between-hashtable-hashmap-Java-collectio...
    • 31438 Hits
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  • ConcurrentHashMap vs HashMap in Java

    Java beginners often confused between ConcurrentHashMap and HashMap. They tend to use CHM even when its not required and they use HashMap where its no
    http://java67.blogspot.com/2012/08/difference-between-hashmap-and-concurrentHashMap-java-c...
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  • ArrayList Sorting Example in Java

    Java coding tips to sort ArrayList in increasing and decreasing Order. Order is controlled by Comparator and Comparable interfaces, there are also som
    http://java67.blogspot.com/2012/08/how-to-sort-arraylist-in-java-list.html
    • 31343 Hits
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  • Unmodifiable or Read Only Collection in Java

    Sometime, you want to make your Collection class read only e.g. for sharing between two modules, functions or objects. Java API provides easy way to c
    http://java67.blogspot.com/2012/08/how-to-create-read-only-collection-in-java-example.html
    • 31315 Hits
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  • String to Enum Java Example

    Given String being widely used everywhere, we often need to convert it to different data types, e.g. You have retrieved String values from database an
    http://java67.blogspot.com/2012/08/how-to-create-enum-from-string-in-java.html
    • 31246 Hits
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  • HashMap vs ArrayList in Java

    If you have to name two most popular collection classes then most programmers will say ArrayList and HashMap. Indeed they are the two pillars of Colle
    http://java67.blogspot.com/2012/08/difference-between-hashmap-and-ArrayList-in-Java.html
    • 31261 Hits
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