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# Package java.lang

## Classes

ArrayStoreException | See the official Java API doc for details.
AssertionError | Represents an error caused by an assertion failure.
Boolean | Wraps native `boolean` as an object.
Byte | Wraps native `byte` as an object.
Character | Wraps a native `char` as an object.
Class | Generally unsupported.
ClassCastException | Indicates failure to cast one type into another.
Double | Wraps a primitive `double` as an object.
Error | See the official Java API doc for details.
Exception | See the official Java API doc for details.
Float | Wraps a primitve `float` as an object.
IllegalArgumentException | See the official Java API doc for details.
IllegalStateException | Indicates that an objet was in an invalid state during an attempted operation.
IndexOutOfBoundsException | See the official Java API doc for details.
Integer | Wraps a primitive `int` as an object.
Long | Wraps a primitive `long` as an object.
Math | Math utility methods and constants.
NegativeArraySizeException | See the official Java API doc for details.
NullPointerException | See the official Java API doc for details.
Number | Abstract base class for numberic wrapper classes.
NumberFormatException | See the official Java API doc for details.
Object | The superclass of all other types.
RuntimeException | See the official Java API doc for details.
Short | Wraps a primitive `short` as an object.
String | Intrinsic string class.
StringBuffer | A fast way to create strings using multiple appends.
StringIndexOutOfBoundsException | See the official Java API doc for details.
System | General-purpose low-level utility methods.
Throwable | See the official Java API doc for details.
UnsupportedOperationException | See the official Java API doc for details.

## Interfaces

CharSequence | Abstracts the notion of a sequence of characters.
Cloneable | Indicates that a class implements `clone()`.
Comparable | An interface used a basis for implementing custom ordering.