How to convert enumeration to list in java?

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.list() method will returns an array list containing the elements returned by the specified enumeration … Read more

How to find repeated element count in a collection?

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.frequency() method will returns the number of elements in the specified collection equal to the … Read more

how to replace element in list java?

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.fill() method will replaces all of the elements of the specified list with the specified … Read more

java enumeration for arraylist

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.enumeration() method will returns an enumeration over the specified collection. Syntax: public static Enumeration enumeration(Collection … Read more

How to create empty map using Collections class?

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.emptyMap() method will returns the empty map (immutable). Syntax: public static final Map emptyMap() Example … Read more

How to create empty set using Collections class?

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.emptySet() method will returns the empty set (immutable). Syntax: public static final Set emptySet() Example … Read more

How to create empty list using Collections class?

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.emptyList() method returns the empty list (immutable). Syntax: public static final List emptyList() Example   … Read more

Java Collections.disjoint() method

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.disjoint() method will returns true if the two specified collections have no elements in common. … Read more

Java Collections.checkedMap() method

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.checkedMap() method will returns a dynamically typesafe view of the specified map. Syntax: public static … Read more

Java Collections.checkedSet() method

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends. Collections.checkedSet() method will returns a dynamically type safe view of the specified set. Example package … Read more