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Java } } Vector dayNames = new Vector(); dayNames.add("Sunday"); dayNames.add("Monday"); dayNames.add("Tuesday"); dayNames.add("Wednesday"); dayNames.add("Thursday"); dayNames.add("Friday"); dayNames.add("Saturday"); days = dayNames.elements(); while (days.hasMoreElements()){ System.out.println(days.nextElement()); } This will produce the following result: Sunday onday Tuesday Wednesday Thursday Friday Saturday The Collection Classes Java provides a set of standard collection classes that implement Collection interfaces. Some of the classes provide full implementations that can be used as-is and others are abstract class, providing skeletal implementations that are used as starting points for creating concrete collections. 389
Java The standard collection classes are summarized in the following table: Sr. No. 1 2 Classes with Description AbstractCollection Implements most of the Collection interface. AbstractList Extends AbstractCollection and implements most of the List interface. AbstractSequentialList 3 Extends AbstractList for use by a collection that uses sequential rather than random access of its elements. 4 LinkedList Implements a linked list by extending AbstractSequentialList. 5 6 ArrayList Implements a dynamic array by extending AbstractList. AbstractSet Extends AbstractCollection and implements most of the Set interface. 7 HashSet Extends AbstractSet for use with a hash table. 8 LinkedHashSet Extends HashSet to allow insertion-order iterations. 9 TreeSet Implements a set stored in a tree. Extends AbstractSet. 390
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Java About the Tutorial Java is a h
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Java 5. Java - Basic Datatypes ....
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Java Java - String Buffer delete()
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Java File Class ...................
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Java The Dictionary Class .........
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Java - Basics
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Java Distributed: Java is designe
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2. Java - Environment Setup Java In
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3. Java - Basic Syntax Java When we
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Java Java Identifiers All Java comp
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Java class const continue default d
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4. Java - Objects & Classes Java Ja
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Java Each time a new object is crea
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Java This will produce the followin
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Java Example This example explains
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Java Import Statements In Java if a
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Java Now, compile both the classes
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Java Example: short s = 10000, sho
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Java Prefix 0 is used to indicate o
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6. Java - Variable Types Java A var
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7. Java - Modifier Types Java Modif
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Java Protected Access Modifier - Pr
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Java private static void addInstanc
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Java The Abstract Modifier Abstract
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Java Example public class MyRunnabl
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8. Java - Basic Operators Java Java
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Java // Check the difference in d++
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Java Example The following program
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Java Example The following simple e
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Java 9 &= Bitwise AND assignment op
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Java c /= a = 1 c %= a = 5 c = 2 =
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Java Precedence of Java Operators O
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Java While Loop in Java A while loo
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Java Syntax The syntax of a for loo
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Java } This will produce the follow
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Java Expression: This evaluates to
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Java nested if statements You can u
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Java Flow Diagram Example public cl
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Java } } This will produce the foll
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Java A switch statement can have a
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Java What is Next? In the next chap
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Java 17 sqrt() Returns the square r
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Java // Returns double primitive da
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Java Example public class Test{ pub
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Java Java - toString() Method Descr
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Java } } System.out.println(Math.fl
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Java } } System.out.println(Math.ri
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Java Return Value This method retu
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12. Java - Character Class Java Nor
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Java Character Methods Following is
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Java Example public class Test { }
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Java Example public class Test{ } p
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Java The StringBuilder class was in
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Java Parameters Here is the detail
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Java 11 void setLength(int newLengt
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Java Using String's static format()
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Java 15 int hashCode() Returns a ha
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Java 35 boolean startsWith(String p
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Java Java - String compareTo(Object
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Java } } result = str3.compareTo( s
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Java Example public class Test { pu
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Java Parameters Here is the detail
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Java } } }catch( Exception ex){ } S
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Java Example import java.io.*; publ
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Java fromIndex -- the index to sta
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Java Return Value Example This met
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Java System.out.println(Str1.region
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Java Java - String replace() Method
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Java Java - String replaceFirst() M
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Java } } System.out.println(retval)
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Java } } System.out.println(retval)
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Java } } System.out.println(Str.sta
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Java Syntax Here is the syntax of t
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Java Java - String toLowerCase() Me
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Java Java - String toString() Metho
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Java Syntax Here is the syntax of t
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Java valueOf(char[] data, int
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Java The above statement does two t
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Java The foreach Loops JDK 1.5 intr
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Java public static void fill(int[]
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Java 5 int compareTo(Object obj) Op
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Java Simple DateFormat Format Codes
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Java } } // display time and date u
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Java I Two-digit hour (with leading
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Java } } } catch (Exception e) { }
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Java 5 GregorianCalendar(Locale aLo
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Java void roll(int field, boolean u
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Java Example Following example illu
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Java re? Matches 0 or 1 occurrence
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Java Methods of the Matcher Class H
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Java The start and end Methods Foll
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Java } } System.out.println("lookin
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Java PatternSyntaxException Class M
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Java Parameter List: The list of
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Java Example public class ExampleVo
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Java Example The following program
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Java } } You will need to call a co
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Java this(); } //Assigning the loca
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Java } } System.out.println("The ma
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Java out = new FileOutputStream("ou
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Java Standard Streams All the progr
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Java The two important streams are
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Java This method reads upto len num
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Java DataInputStream The DataInputS
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Java FileOutputStream FileOutputStr
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Java public String toString() 3 Con
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Java DataOutputStream The DataOutpu
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Java Example Following is the examp
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Java 3 public File getParentFile()
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Java 18 public String[] list(Filena
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Java Example Following is an exampl
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Java Example Following is an exampl
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Java Writes a portion of an array o
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Java Listing Directories You can us
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Java If you try to compile the abov
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Java IllegalMonitorStateException I
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Java Catching Exceptions A method c
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Java return -1; }catch(FileNotFound
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Java Example public class ExcepTest
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Java try(FileReader fr=new FileRead
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Java To demonstrate using our user-
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Java Sorry, but you are short $200.
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Java Inner Classes (Non-static Nest
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Java } } Outer_Demo.Inner_Demo inne
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Java Anonymous Inner Class as Argum
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Java 297
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Java Java - Object Oriented 299
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Java Copy and paste the following p
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Java Differentiating the Members If
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Java Invoking Superclass Constructo
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Java Now, if we consider the IS-A r
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22. Java - Overriding Java In the p
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Java } } b.bark(); This will produc
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23. Java - Polymorphism Java Polymo
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Java } public void setAddress(Strin
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Java mailCheck() on e is quite diff
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Java { System.out.println("Construc
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Java Inheriting the Abstract Class
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Java You have to place the abstr
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Java public void setAge( int newAge
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26. Java - Interfaces Java An inter
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Java Following package example cont
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Java What happens if the Employee c
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Java Set states; String str; capita
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Java boolean equals(Object bitSet)
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Java System.out.println("Initial pa
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Java 5 static void fill(List list,
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Java 30 31 32 33 34 35 36 37 static
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Java How to Use an Iterator ? Often
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Java int previousIndex( ) 7 Returns
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Java public class Example{ public s
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Java Example Following example illu
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Java return max; // returns the lar
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31. Java - Serialization Java Java
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Java } } System.out.printf("Seriali
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32. Java - Networking Java The term
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Java Returns the port of the URL. 5
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Java { String serverName = args[0];
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Java try{ // Create a default MimeM
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34. Java - Multithreading Java Java
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Java void start( ); Example Here is
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Java Step 1 You will need to overri
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Java Thread: Thread-2, 2 Thread: Th
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Java Example The following ThreadCl
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Java System.out.println("Starting t
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Java Multithreading Example without
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Java Counter --- 3 Counter --- 2 Co
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Java This produces the same result
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Java public T1(Chat m1) { this.m =
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Java } synchronized (Lock2) { Syste
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Java } } catch (InterruptedExceptio
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Java Thread: Thread-2, 7 Suspending
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Java destroy: This method is only
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Java Example HTML applet Tag
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Java onresize onstorage onundo onun
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Java Media Events Following tags ha
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Java Getting Applet Parameters The
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Java Following are the specific ste
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Java public void mouseExited(MouseE
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Java Playing Audio An applet can pl
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36. Java - Documentation Comments J
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Java @exception Adds a Throws subhe
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Java /** * This is the main method
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