Yahoo Web Search

Search results

1. Top results related to 8 functions of dictionary in java programming language

   • Dictionary of ArrayLists in Java

     Top Answer

     Answered Jun 05, 2012 · 2 votes

     Instead of ArrayList grades; you'd have to use ArrayList grades = new ArrayList();

     Yet better: ArrayList<Float> grades = new ArrayList<Float>(); //or use Double or Number

     Note that unlike C or C++ creating a variable doesn't create the object as well. In C++ you could imagine your code as ArrayList* grades; i.e. you'd just create the reference/pointer here.

     Additional thoughts:

     • Dictionary studentGrades; this will be initialized to null.
     • public void main(String[] args) that's not a valid main function since it would have to be static
     • if you have a public static void main(String[] args) you can't use this since you don't have an object instance in the static context
     • You can't instantiate Dictionary since it is abstract. Use one of its subclasses, e.g. new Hashtable<String, List<Float>>(), or a map, e.g. Map<String, List<Float> dictionary = new HashMap<String, List<Float>>();
     • Note that local primitive variables are also not initialized, so this could give you an error too: boolean res; In Java only class members are initialized, local variables are not.

     Check all answers on Stack Overflow

     1/5

   • Dictionary sorting of ArrayList of Arraylist in java

     Top Answer

     Answered Mar 23, 2019 · 2 votes

     Comparator functions that contain 1 or -1 are error prone.

     Instead, you should write it like this:

     public static int lexicographically(List<Integer> a, List<Integer> b) { for (int i = 0, end = Math.min(a.size(), b.size()); i < end; i++) { int res = Integer.compare(a.get(i), b.get(i)); if (res != 0) return res; } return Integer.compare(a.size(), b.size());}

     This style of writing comparator functions prevents various common mistakes, such as never returning 0.

     The most important pattern in this style is:

     • Compare by the first criterion.
     • If the given values differ, return the comparison result and be done.
     • Take the next criterion, continue with step 1.
     • If there are no criteria left, return 0.

     Check all answers on Stack Overflow

     2/5

   • Java functions in Hack assembly Language

     Top Answer

     Answered Aug 07, 2018 · 1 votes

     In order to implement true function calls in Hack, you need to first implement a push-down stack. Once that is done it is relatively straightforward.

     Then, to make function calls, you load D with the return address and push it. For single-parameter function calls you can pass the function parameter in D; for multiple-parameter calls you will also need to push these values onto the stack.

     You then make an unconditional jump to the function. In the function, you do whatever you need to do (including popping any parameters from the stack). Finally, you pop the return address from the stack into A and unconditionally jump.

     The return operation can be done in 4 instructions. The call operation requires 9 instructions.

     If functions are guaranteed to be non-recursive, you can dispense with the stack and put the function parameters, including the return address, in a fixed block of memory associated with each function.

     Check all answers on Stack Overflow

     3/5

   • java programming: logical operators and functions in android application

     Top Answer

     Answered Apr 25, 2016 · 0 votes

     You can improve a lot of things in your code. I suggest some of the changes here -

     public boolean IsAvailableInContactList(String paramString) {- if(contactlistnum.contains(paramString)){ return true; } else{ return false; }}

     • You can use ArrayList instead of primitive array . This will help you in easily changing the contents as you have that requirement.
     • Them modify your IsAvailableInContactList() to return boolean true or false based on whether the paramString is present in your contactlistnum or not - public boolean IsAvailableInContactList(String paramString) { if(contactlistnum.contains(paramString)){ return true; } else{ return false; }}
     • Finally change your AddtoContactList() - public void AddtoContactList(String paramString1, String paramString2) { if(IsAvailableInContactList(paramString2)){ Toast.makeText(mContext, "Contact already exist in the list", Toast.LENGTH_SHORT).show(); return; } if (contactlistnum.size() >= 5) { contactlistnum.remove(0); //Removes 1st item contactlistnum.add(4,paramString1); //Add the new item at the 5th index }}

     Hope these changes resolves your issues.

     Check all answers on Stack Overflow

     4/5

   • Java Functional Programming: creating a map of functions

     Top Answer

     Answered Dec 22, 2015 · 4 votes

     Yes it's possible. You need to create a map then short by any properties by passing Comparator for that.

     Stream<Map.Entry<K,V>> sorted = map.entrySet().stream() .sorted(Map.Entry.comparingByValue(comparator));-

     Check all answers on Stack Overflow

     5/5

   Show moreShow less

2. www.geeksforgeeks.org › java-util-dictionary-classJava.util.Dictionary Class in Java - GeeksforGeeks

   www.geeksforgeeks.org › java-util-dictionary-class

   • Cached

   Apr 9, 2023 · The java.util.Dictionary class in Java is an abstract class that represents a collection of key-value pairs, where keys are unique and are used to access the values. It was part of the Java Collections Framework introduced in Java 1.2 but has been largely replaced by the java.util.Map interface since Java 1.2.

3. stackoverflow.com › questions › 1145175What's the most practical way to have "functions in a ...

   stackoverflow.com › questions › 1145175

   • Cached

   Jul 19, 2013 · The short answer is you need to wrap each method in a class - called a functor. answered Jul 17, 2009 at 19:21. Draemon. 34.5k 16 78 105. 1. Apache Commons Functor exists to provide this in Java - commons.apache.org/sandbox/functor.

   Code sample

   private static Map<String, Action<Foo>> getActions() {

     Action<Foo> firstAction = new Action<Foo>() {

     @Override public void execute(Foo item) {

     }

     };...

   See more on stackoverflow

4. www.tutorialspoint.com › dictionary-methods-in-javaDictionary Methods in Java - Online Tutorials Library

   www.tutorialspoint.com › dictionary-methods-in-java

   • Cached

   Sep 24, 2019 · Following is an example implementing put() and get() method of the Dictionary class −. Example import java.util.*; public class Demo { public static void main(String[] args) { Dictionary dictionary = new Hashtable(); dictionary.put("20", "John"); dictionary.put("40", "Tom"); dictionary.put("60", "Steve"); dictionary.put("80", "Kevin ...

5. www.geeksforgeeks.org › dictionary-elements-methodDictionary elements() Method in Java with Examples

   www.geeksforgeeks.org › dictionary-elements-method

   • Cached

   Dec 27, 2018 · Last Updated : 27 Dec, 2018. The keys () method of Dictionary class in Java is used to get the enumeration of the values present in the dictionary. Syntax: Enumeration enu = DICTIONARY.elements() Parameters: The method does not take any parameters.

6. thelinuxcode.com › create-a-dictionary-in-javaThe Complete Guide to Effectively Using Dictionaries in Java

   thelinuxcode.com › create-a-dictionary-in-java

   • Cached

   Dec 27, 2023 · Dictionaries are a fundamental data structure in programming used to map keys to values for efficient lookup and organization. Mastering dictionaries is key to writing optimized Java code. In this comprehensive guide, you‘ll learn all about dictionaries and how to leverage them in your Java programs like a pro!

7. www.edureka.co › blog › dictionary-in-javaWhat is Dictionary in Java and How to Create it? - Edureka

   www.edureka.co › blog › dictionary-in-java

   • Cached

   Jun 17, 2021 · What is Dictionary in Java? Methods of util.Dictionary Class; Check the size of the dictionary; Add/ put values in dictionary; Return values present in the dictionary; Get method to fetch the values mapped with the key; Check if the dictionary is empty; Removing key value from the dictionary; Implementation of Dictionary in Java; What is ...

8. People also ask

   What is dictionary in Java?

   • Dictionary in Java is the abstract class that is the parent of any class which uses the key-value pair relationship. In this blog, we will learn more about the Dictionary class in Java and get familiar with the different methods. Below are the topics covered in this blog-

   Dictionary in Java | How to Create Java.util.Dictionary Class - Edureka

   www.edureka.co/blog/dictionary-in-java/

   See all results for this question

   How to retrieve a value from a dictionary object in Java?

   • You can store the value in a Dictionary object and once it is stored, you can retrieve it by using its key. Let us have a look at a few different methods of Dictionary Class. isEmpty () : java.util.Dictionary.isEmpty () checks whether the dictionary is empty or not.

   Dictionary in Java | How to Create Java.util.Dictionary Class - Edureka

   www.edureka.co/blog/dictionary-in-java/

   See all results for this question

   What is a dictionary class?

   • The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values. Every key and every value is an object. In any one Dictionary object, every key is associated with at most one value. Given a Dictionary and a key, the associated element can be looked up.

   Dictionary (Java Platform SE 8 ) - Oracle

   docs.oracle.com/javase/8/docs//api/java/util/Dictionary.html

   See all results for this question

   How to get enumeration of a dictionary in Java?

   • The keys () method of Dictionary class in Java is used to get the enumeration of the values present in the dictionary. Syntax: Parameters: The method does not take any parameters. Return value: The method returns an enumeration of the values of the Dictionary. Program 2: A Computer Science portal for geeks.

   Dictionary elements() Method in Java with Examples

   www.geeksforgeeks.org/dictionary-elements-method-in-java-with-examples/

   See all results for this question

9. docs.oracle.com › api › javaDictionary (Java Platform SE 8 ) - Oracle

   docs.oracle.com › api › java

   • Cached

   The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values. Every key and every value is an object. In any one Dictionary object, every key is associated with at most one value. Given a Dictionary and a key, the associated element can be looked up. Any non- null object can be used as a key and as a value.