Java Collections Framework Quiz

searching

searching

collection

<p>iteration</p> Signup and view all the answers

<p>data type</p> Signup and view all the answers

<p>CopyOnWriteArrayList</p> Signup and view all the answers

<p>TreeMap</p> Signup and view all the answers

<p>List</p> Signup and view all the answers

<p>hash table</p> Signup and view all the answers

<p>Collection</p> Signup and view all the answers

<p>List</p> Signup and view all the answers

<p>keys</p> Signup and view all the answers

<p>duplicate</p> Signup and view all the answers

<p>processing</p> Signup and view all the answers

<p>Collections = Provides various utility methods for manipulating collections, such as sorting, shuffling, and searching. Arrays = Contains utility methods for working with arrays, such as sorting and searching. Iterator = An interface that provides methods to iterate over a collection. ListIterator = An interface that extends Iterator and provides additional methods to iterate bidirectionally and modify the list during iteration.</p> Signup and view all the answers

<p>Generics = Introduced in Java 5, allows you to write classes and methods that can work with any data type. Concurrency Collection Classes = Introduced in Java 5, provides thread-safe collection classes, such as ConcurrentHashMap and CopyOnWriteArrayList. Comparator = An interface for comparing objects. It is used for custom sorting in collections like TreeSet and TreeMap. Set = A collection that does not allow duplicate elements.</p> Signup and view all the answers

<p>Map = An object that maps keys to values. Queue = A collection used to hold elements before processing. HashSet = An implementation of the Set interface that uses a hash table for storage. ArrayList = A dynamic array implementation of the List interface.</p> Signup and view all the answers

<p>ArrayList = A dynamic array implementation of the List interface LinkedList = A doubly-linked list implementation of the List interface HashSet = An implementation of the Set interface that uses a hash table for storage HashMap = An implementation of the Map interface that uses a hash table for storage</p> Signup and view all the answers

<p>Collection = The root interface for all collection classes List = An ordered collection that allows duplicate elements Set = A collection that does not allow duplicate elements Queue = A collection used to hold elements before processing</p> Signup and view all the answers

<p>TreeSet = Uses a red-black tree for storage TreeMap = Uses a red-black tree for storage HashMap = Uses a hash table for storage LinkedList = Uses a doubly-linked list for storage</p> Signup and view all the answers

<p>Collection = ArrayList, LinkedList, HashSet, HashMap List = ArrayList, LinkedList, Vector Set = HashSet, LinkedHashSet, TreeSet Queue = LinkedList, PriorityQueue</p> Signup and view all the answers

<p>ArrayList = Dynamic array implementation HashSet = Set interface implementation using a hash table LinkedList = Doubly-linked list implementation HashMap = Map interface implementation using a hash table</p> Signup and view all the answers

<p>ArrayList = List LinkedList = List HashSet = Set HashMap = Map</p> Signup and view all the answers

<p>ArrayList = Flexible and extensible collection for storing objects efficiently HashSet = Collection that does not allow duplicate elements LinkedList = Collection used to hold elements before processing HashMap = Object that maps keys to values</p> Signup and view all the answers

<p>Iterator = ListIterator Set = HashSet Map = ConcurrentHashMap Collection = ConcurrentCollection</p> Signup and view all the answers

<p>Arrays = Contains utility methods for working with arrays, such as sorting and searching. Collections = Provides various utility methods for manipulating collections, such as sorting, shuffling, and searching. Comparator = An interface for comparing objects. It is used for custom sorting in collections like TreeSet and TreeMap. Generics = Introduced in Java 5, allows you to write classes and methods that can work with any data type.</p> Signup and view all the answers

<p>LinkedList = List ConcurrentHashMap = Map CopyOnWriteArrayList = List HashSet = Set</p> Signup and view all the answers

<p>ConcurrentHashMap = Thread-safe collection classes LinkedList = Doubly-linked list implementation CopyOnWriteArrayList = Thread-safe collection classes HashSet = Collection that does not allow duplicate elements</p> Signup and view all the answers

<p>LinkedList = Doubly-linked list ConcurrentHashMap = Hash table CopyOnWriteArrayList = Array HashSet = Hash table</p> Signup and view all the answers

<p>Generics = Allows you to write classes and methods that can work with any data type Comparator = Interface for comparing objects used for custom sorting Concurrency Collection Classes = Provides thread-safe collection classes Iterator = Interface that provides methods to iterate over a collection</p> Signup and view all the answers

<p>Set = Collection that does not allow duplicate elements ConcurrentHashMap = Thread-safe implementation of the Map interface ListIterator = Interface that extends Iterator and provides additional methods to iterate bidirectionally and modify the list during iteration Arrays = Contains utility methods for working with arrays, such as sorting and searching</p> Signup and view all the answers

<p>ArrayList = Dynamic array LinkedList = Doubly-linked list HashSet = Hash table TreeMap = Red-black tree</p> Signup and view all the answers

<p>List = Ordered collection allowing duplicate elements Set = Collection not allowing duplicate elements Queue = Collection used to hold elements before processing Map = Object that maps keys to values</p> Signup and view all the answers

<p>ArrayList = List interface implementation HashSet = Set interface implementation LinkedList = List interface implementation TreeMap = Map interface implementation</p> Signup and view all the answers

<p>List = ArrayList, LinkedList Set = HashSet, LinkedHashSet Queue = LinkedList, PriorityQueue Map = HashMap, LinkedHashMap</p> Signup and view all the answers

<p>ListIterator = Interface extending Iterator, provides bidirectional iteration and list modification HashMap = Implementation of the Map interface using a hash table TreeSet = Implementation of the Set interface using a red-black tree Collection = Root interface for all collection classes, defines basic methods</p> Signup and view all the answers

<p>Collections = Provides utility methods for manipulating collections like sorting and shuffling Iterator = Interface with methods for iterating over a collection Comparator = Interface for comparing objects, used for custom sorting in collections Arrays = Contains utility methods for working with arrays like sorting and searching</p> Signup and view all the answers

<p>HashMap = Uses a hash table for storage LinkedList = Doubly-linked list implementation TreeSet = Uses a red-black tree for storage HashSet = Uses a hash table for storage</p> Signup and view all the answers

<p>Raw Native Interface (RNI) = Similar mechanism for calling native code from Java, less clumsy to use than JNI J/Direct = Easy way to call existing native code not aware of Java, such as the Windows API Java Native Access (JNA) = Community-developed library providing easy access to native shared libraries without using JNI Java Native Interface (JNI) = Built-in to core Java, harder to code but faster than JNA</p> Signup and view all the answers

<p>Raw Native Interface (RNI) = No bookkeeping with a Java environment pointer needed J/Direct = Easier to use than using the necessary intermediate native library and JNI Java Native Access (JNA) = Provides Java programmers easy access to native shared libraries without using JNI Java Native Interface (JNI) = Faster than JNA, built-in to core Java</p> Signup and view all the answers

<p>Raw Native Interface (RNI) = Had an easy way to call existing native code not aware of Java, such as the Windows API J/Direct = Called existing native code not aware of Java, such as the Windows API Java Native Access (JNA) = Provides easy access to native shared libraries without using JNI Java Native Interface (JNI) = Built-in to core Java</p> Signup and view all the answers

<p>Raw Native Interface (RNI) = Calling native code from Java J/Direct = Calling existing native code not aware of Java, such as the Windows API Java Native Access (JNA) = Providing Java programmers easy access to native shared libraries without using JNI Java Native Interface (JNI) = Built-in to core Java, used for calling native code</p> Signup and view all the answers

<p>Java = Enabling Java code to call and be called by native applications and libraries C++ = Writing native methods to handle platform-specific features Assembly = Creating Java objects and using them in native methods Python = Modifying existing applications to be accessible to Java applications</p> Signup and view all the answers

<p>Enabling programmers to write native methods = Handling situations when an application cannot be written entirely in Java Modifying existing applications to be accessible to Java applications = Usage of JNI to provide functionality to the developer and user Allowing native methods to use Java objects = Inspecting and using Java objects to perform tasks Including performance- and platform-sensitive API implementations in the standard library = Providing all Java applications access to functionality in a safe and platform-independent manner</p> Signup and view all the answers

<p>Standard Java class library does not support platform-specific features = Writing native methods to handle these features Need to create Java objects and use them in native methods = Utilizing JNI to inspect and use Java objects in native methods Modifying an existing application written in another programming language = Making it accessible to Java applications using JNI Dependence of standard library classes on JNI = Providing functionality such as file I/O and sound capabilities</p> Signup and view all the answers

<p>File I/O and sound capabilities = Provided to the developer and user through JNI Inspecting and using objects created by Java application code = Capability of native methods in the context of JNI Creating Java objects and using them in native methods = Enabled by the JNI framework Performance- and platform-sensitive API implementations in the standard library = Accessible to all Java applications in a safe and platform-independent manner via JNI</p> Signup and view all the answers

<p>JNIEnv pointer = A structure containing functions necessary to interact with the JVM and work with Java objects .c or .cpp files = Files where native functions are implemented in the JNI framework JNI overhead = Considerable performance loss under certain circumstances, such as expensive function calls and lack of inlining Modified UTF-8 = The encoding used for certain JNI functions, differing from standard UTF-8</p> Signup and view all the answers

<p>Linux and Solaris = Platforms where native code can intercept signals intended for the JVM Windows = Platform where Structured Exception Handling (SEH) may be employed to handle machine-generated software interrupts</p> Signup and view all the answers

<p>Garbage collection = JNI framework does not provide automatic garbage collection for non-JVM memory resources allocated by native code String access = JNI incurs O(n) copy requirements for accessing or creating Java Strings</p> Signup and view all the answers

<p>Mapping of native data types to/from Java data types = Allowed by JNI with explicit conversion required for compound types such as objects, arrays, and strings Type interchangeability = JNI provides a table showing the mapping of types between Java (JNI) and native code, including how certain signatures are represented and how types are interchangeable</p> Signup and view all the answers