| Package | Description |
|---|---|
| java.io | |
| java.lang | |
| java.lang.annotation | |
| java.lang.invoke | |
| java.lang.reflect |
Provides classes and interfaces for obtaining reflective
information about classes and objects.
|
| java.net | |
| java.util |
| Modifier and Type | Class and Description |
|---|---|
class |
EOFException
Signals that an end of file or end of stream has been reached
unexpectedly during input.
|
class |
IOException
Signals that an I/O exception of some sort has occurred.
|
class |
UnsupportedEncodingException
The Character Encoding is not supported.
|
class |
UTFDataFormatException
Signals that a malformed string in
modified UTF-8
format has been read in a data
input stream or by any class that implements the data input
interface.
|
| Modifier and Type | Class and Description |
|---|---|
class |
ArithmeticException
Thrown when an exceptional arithmetic condition has occurred.
|
class |
ArrayIndexOutOfBoundsException
Thrown to indicate that an array has been accessed with an
illegal index.
|
class |
ArrayStoreException
Thrown to indicate that an attempt has been made to store the
wrong type of object into an array of objects.
|
class |
AssertionError
Thrown to indicate that an assertion has failed.
|
class |
Boolean
The Boolean class wraps a value of the primitive type
boolean in an object. |
class |
Byte
The
Byte class wraps a value of primitive type byte
in an object. |
class |
Character
The
Character class wraps a value of the primitive
type char in an object. |
class |
Class<T>
Instances of the class
Class represent classes and
interfaces in a running Java application. |
class |
ClassCastException
Thrown to indicate that the code has attempted to cast an object
to a subclass of which it is not an instance.
|
class |
ClassFormatError
Thrown when the Java Virtual Machine attempts to read a class
file and determines that the file is malformed or otherwise cannot
be interpreted as a class file.
|
class |
ClassNotFoundException
Thrown when an application tries to load in a class through its
string name using:
The
forName method in class Class. |
class |
CloneNotSupportedException
Thrown to indicate that the
clone method in class
Object has been called to clone an object, but that
the object's class does not implement the Cloneable
interface. |
class |
Double
The
Double class wraps a value of the primitive type
double in an object. |
class |
Enum<E extends Enum<E>>
This is the common base class of all Java language enumeration types.
|
class |
Error
An
Error is a subclass of Throwable
that indicates serious problems that a reasonable application
should not try to catch. |
class |
Exception
The class
Exception and its subclasses are a form of
Throwable that indicates conditions that a reasonable
application might want to catch. |
class |
Float
The
Float class wraps a value of primitive type
float in an object. |
class |
IllegalAccessError
Thrown if an application attempts to access or modify a field, or
to call a method that it does not have access to.
|
class |
IllegalAccessException
An IllegalAccessException is thrown when an application tries
to reflectively create an instance (other than an array),
set or get a field, or invoke a method, but the currently
executing method does not have access to the definition of
the specified class, field, method or constructor.
|
class |
IllegalArgumentException
Thrown to indicate that a method has been passed an illegal or
inappropriate argument.
|
class |
IllegalStateException
Signals that a method has been invoked at an illegal or
inappropriate time.
|
class |
IncompatibleClassChangeError
Thrown when an incompatible class change has occurred to some class
definition.
|
class |
IndexOutOfBoundsException
Thrown to indicate that an index of some sort (such as to an array, to a
string, or to a vector) is out of range.
|
class |
InstantiationException
Thrown when an application tries to create an instance of a class
using the
newInstance method in class
Class, but the specified class object cannot be
instantiated. |
class |
Integer
The
Integer class wraps a value of the primitive type
int in an object. |
class |
InterruptedException
Thrown when a thread is waiting, sleeping, or otherwise occupied,
and the thread is interrupted, either before or during the activity.
|
class |
LinkageError
Subclasses of
LinkageError indicate that a class has
some dependency on another class; however, the latter class has
incompatibly changed after the compilation of the former class. |
class |
Long
The
Long class wraps a value of the primitive type long in an object. |
class |
NegativeArraySizeException
Thrown if an application tries to create an array with negative size.
|
class |
NoSuchMethodError
Thrown if an application tries to call a specified method of a
class (either static or instance), and that class no longer has a
definition of that method.
|
class |
NoSuchMethodException
Thrown when a particular method cannot be found.
|
class |
NullPointerException
Thrown when an application attempts to use
null in a
case where an object is required. |
class |
Number
The abstract class
Number is the superclass of classes
BigDecimal, BigInteger,
Byte, Double, Float,
Integer, Long, and Short. |
class |
NumberFormatException
Thrown to indicate that the application has attempted to convert
a string to one of the numeric types, but that the string does not
have the appropriate format.
|
class |
OutOfMemoryError
Thrown when the Java Virtual Machine cannot allocate an object
because it is out of memory, and no more memory could be made
available by the garbage collector.
|
class |
ReflectiveOperationException
Common superclass of exceptions thrown by reflective operations in
core reflection.
|
class |
RuntimeException
RuntimeException is the superclass of those
exceptions that can be thrown during the normal operation of the
Java Virtual Machine. |
class |
SecurityException
Thrown by the security manager to indicate a security violation.
|
class |
Short
The
Short class wraps a value of primitive type short in an object. |
class |
StackTraceElement
An element in a stack trace, as returned by
Throwable.getStackTrace(). |
class |
String
The
String class represents character strings. |
class |
StringBuffer
A thread-safe, mutable sequence of characters.
|
class |
StringBuilder
A mutable sequence of characters.
|
class |
StringIndexOutOfBoundsException
Thrown by
String methods to indicate that an index
is either negative or greater than the size of the string. |
static class |
Thread.State
A thread state.
|
class |
Throwable
The
Throwable class is the superclass of all errors and
exceptions in the Java language. |
class |
UnsupportedOperationException
Thrown to indicate that the requested operation is not supported.
|
class |
VirtualMachineError
Thrown to indicate that the Java Virtual Machine is broken or has
run out of resources necessary for it to continue operating.
|
| Modifier and Type | Class and Description |
|---|---|
class |
ElementType
A program element type.
|
class |
RetentionPolicy
Annotation retention policy.
|
| Modifier and Type | Class and Description |
|---|---|
class |
MethodType
A method type represents the arguments and return type accepted and
returned by a method handle, or the arguments and return type passed
and expected by a method handle caller.
|
class |
SerializedLambda
Serialized form of a lambda expression.
|
| Modifier and Type | Class and Description |
|---|---|
class |
InvocationTargetException
InvocationTargetException is a checked exception that wraps
an exception thrown by an invoked method or constructor.
|
class |
Proxy
Proxy provides static methods for creating dynamic proxy
classes and instances, and it is also the superclass of all
dynamic proxy classes created by those methods. |
class |
UndeclaredThrowableException
Thrown by a method invocation on a proxy instance if its invocation
handler's
invoke method throws a
checked exception (a Throwable that is not assignable
to RuntimeException or Error) that
is not assignable to any of the exception types declared in the
throws clause of the method that was invoked on the
proxy instance and dispatched to the invocation handler. |
| Modifier and Type | Class and Description |
|---|---|
class |
MalformedURLException
Thrown to indicate that a malformed URL has occurred.
|
class |
URL
Class
URL represents a Uniform Resource
Locator, a pointer to a "resource" on the World
Wide Web. |
| Modifier and Type | Class and Description |
|---|---|
class |
NoSuchElementException
Thrown by the
nextElement method of an
Enumeration to indicate that there are no more
elements in the enumeration. |
class |
ServiceConfigurationError
Error thrown when something goes wrong while loading a service provider.
|
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