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Implemented as a retrofit for the java.util library having extra features, like data structures like sets and linked sets, and has several algorithms to manipulate elements of a collection, like finding the largest element based on some Comparator<T> object, finding the smallest element, finding sublists within a list, reverse the contents of a ...
The hash function in Java, used by HashMap and HashSet, is provided by the Object.hashCode() method. Since every class in Java inherits from Object , every object has a hash function. A class can override the default implementation of hashCode() to provide a custom hash function more in accordance with the properties of the object.
java.util.Collection class and interface hierarchy Java's java.util.Map class and interface hierarchy. The Java collections framework is a set of classes and interfaces that implement commonly reusable collection data structures. [1] Although referred to as a framework, it works in a manner of a library. The collections framework provides both ...
Java API Both Yes HTML, Text, Unix Patch IntelliJ IDEA (compare) Yes Yes Vertical Yes jEdit JDiff plugin: Yes Both Yes Lazarus Diff Yes Yes Meld: Yes No Yes No Notepad++ (compare) Yes Yes Both Yes No Perforce P4Merge: Yes Yes Vertical Yes No Pretty Diff: Yes Yes JavaScript Both Yes XHTML Tkdiff: Yes Total Commander (compare) Yes Both No No ...
Comparison of Java and .NET platforms ALGOL 58's influence on ALGOL 60; ALGOL 60: Comparisons with other languages; Comparison of ALGOL 68 and C++; ALGOL 68: Comparisons with other languages; Compatibility of C and C++; Comparison of Pascal and Borland Delphi; Comparison of Object Pascal and C; Comparison of Pascal and C; Comparison of Java and C++
For an example from Java's standard library, java.util.Collections.sort() takes a List and a functor whose role is to compare objects in the List. Without first-class functions, the function is part of the Comparator interface. This could be used as follows.
The Java platform (since version 1.5) provides a binary heap implementation with the class java.util.PriorityQueue in the Java Collections Framework. This class implements by default a min-heap; to implement a max-heap, programmer should write a custom comparator.
Here is a small excerpt from the definition of the interfaces java.util.List and java.util.Iterator in package java.util: interface List < E > {void add (E x); ...