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Packages are used in Java for organizing your class files. It can be considered as different folders to organize your files within your file system. You can put related class files together in one package. Java groups predefined classes into different packages like java.lang, java.util, java.io etc. When no package is specified,
Package java.net. Page 1 of 1 mk:@MSITStore:C:Program%20FilesMicrosoft%20Visual%20Stu/Package-java.net.htm 2/19/2002. Package java.net. All Packages. Interfaces. 0 ContentHandlerFactory. 0 FileNameMap. 0 SocketImplFactory. 0 URLStreamHandlerFactory. Classes. 0 ContentHandler.
11. • There are many other libraries that come with the Java. SDK. • See download.oracle.com/javase/6/docs/api/. • They are organized in packages. • Anything in the java.lang package is available to your program by default. • Anything else needs to be imported. • Example: • To use the Scanner class in java.util, write:.
Packages. • Java classes are grouped into packages. • Package names are dot-separated sequences of identifiers, such as java.util javax.swing com.sun.misc edu.sjsu.cs.cs151.alice
Packages. Packages are Java's way of grouping a number of related classes and/or interfaces together into a single unit. That means, packages act as “containers" for classes. The benefits of organising classes into packages are: ? The classes contained in the packages of other programs/applications can be reused.
Java provides the following access modifiers: ? public : Visible to all other classes. ? private : Visible only to the current class (and any nested types). ? protected : Visible to the current class, any of its subclasses, and any other types within the same package. ? default (package): Visible to the current class and any other types.
java.util.regex. Classes for matching character sequences against patterns specified by regular expressions. java.util.spi. Service provider classes for the classes in the java.util package. java.util.zip. Classes for reading and writing the standard ZIP and GZIP file formats. javax.script. Scripting API, defines Scripting Engines
A Package can be defined as a grouping of related types classes, interfaces, enumerationsandannotations providing access protection and name space management. Some of the existing packages in Java are:: java.lang - bundles the fundamental classes java.io - classes for input , output functions are bundled in this
Jargon. Attribute. A single piece of information that represents a property present in all instances of a class. An attribute is often modeled as a variable in a class. Byte. The amount of memory space used to store one ASCII character, which is usually 8 bits. A bit is the smallest unit of information a computer can hold; short.
19 Sep 2000 Java Packages. 0. Package - is a collection of related classes and interfaces that provides access protection and namespace management. ? Avoid name conflicts. ? Access control. 0. Put a package statement at the top of each source file in which the classes and interfaces of that package are defined.
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