Class | Package | Description |
---|---|---|
Array | java.lang.reflect | The Array class contains methods that allow you to set and query array elements. |
Arrays | java.util | The Arrays class provides the capability to perform common array manipulations like searching and sorting on arrays of primitive and reference types. |
BufferedReader | java.io | The BufferedReader class applies buffering to character input streams. |
Class | java.lang | This class represents a reference type instance in memory. There is one Class object for each array type loaded into the Java virtual machine. |
Cloneable | java.lang | The Cloneable interface indicates that the class that implements it may be cloned. |
Double | java.lang | The Double class is a wrapper class for the double primitive type. |
InputStream | java.io | The InputStream class is an abstract class that is the super-class of all input streams. |
InputStreamReader | java.io | The InputStreamReader class is a character input stream. |
Integer | java.lang | The Integer class is a wrapper class for the int primitive type. |
IOException | java.io | The IOException is the superclass of all input/output exceptions. It signals a problem with an IO operation. |
NumberFormat | java.text | The NumberFormat class in used to format numeric output. |
NumberFormatException | java.lang | The NumberFormatExecption signals an illegal number format. |
Object | java.lang | The Object class is the root class for all Java and user-defined reference types. This includes Java array types. |
Serializable | java.lang | The Serializable interface indicates that the class that implements it may be serialized. |
String | java.lang | The String class represents a string of characters and provides methods to manipulate those characters. String objects are immutable, meaning they cannot be changed once created. |
StringBuffer | java.lang | The StringBuffer represents a mutable, or changeable, character string. |
System | java.lang | The System class provides a platform independent interface to system facilities including properties and input/output streams. |