How to remove duplicates from ArrayList in Java? To remove dupliates from ArrayList, we can convert it into Set. Since Set doesn’t…
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arraylist
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How to reverse ArrayList in Java? The reverse method of Collections class can be used to reverse any collection. It is a…
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How to Sort Java ArrayList in Descending Order By using Collections.reverseOrder(Comparator<T>cmp) method, we can sort the collection in reverse order. The reverseOrder()…
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How to Synchronize ArrayList in Java? We can use Collections.synchronizedList(List<T>) method to synchronize collections in java. The synchronizedList(List<T>) method is used to…
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How to convert ArrayList to Array and Array to ArrayList in java? Let’s see a simple example to convert ArrayList to Array…
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How to make ArrayList Read Only? The read-only means unmodifiable view of Collection in which we can not perform any operation which…
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Difference between length of array and size() of ArrayList in Java ArrayList doesn’t have length() method, the size() method of ArrayList provides…
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Array vs ArrayList in Java Array is a fixed length data structure whereas ArrayList is a variable length Collection class. We cannot…
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Collections in Java Java Collection Framework Hierarchy of Collection Framework Collection interface Iterator interface The Collection in Java is a framework that…
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Java Collections class Java collection class is used exclusively with static methods that operate on or return collections. It inherits Object class.…