org.eclipse.jetty.util

Class TypeUtil

java.lang.Object

org.eclipse.jetty.util.TypeUtil

public class TypeUtil
extends java.lang.Object

TYPE Utilities. Provides various static utiltiy methods for manipulating types and their string representations.

Since:

Jetty 4.1

Field Summary

Fields

Modifier and Type	Field and Description
static int	CR
static int	LF

Constructor Summary

Constructors

Constructor and Description
TypeUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static <T> java.util.List<T>	asList(T[] a) Array to List.
static java.lang.Object	call(java.lang.Class<?> oClass, java.lang.String method, java.lang.Object obj, java.lang.Object[] arg)
static byte	convertHexDigit(byte b)
static void	dump(java.lang.Class<?> c)
static void	dump(java.lang.ClassLoader cl)
static byte[]	fromHexString(java.lang.String s)
static java.lang.Class<?>	fromName(java.lang.String name) Class from a canonical name for a type.
static java.net.URL	jarFor(java.lang.String className)
static byte[]	parseBytes(java.lang.String s, int base)
static int	parseInt(byte[] b, int offset, int length, int base) Parse an int from a byte array of ascii characters.
static int	parseInt(java.lang.String s, int offset, int length, int base) Parse an int from a substring.
static byte[]	readLine(java.io.InputStream in)
static void	toHex(byte b, java.lang.Appendable buf)
static java.lang.String	toHexString(byte b)
static java.lang.String	toHexString(byte[] b)
static java.lang.String	toHexString(byte[] b, int offset, int length)
static java.lang.String	toName(java.lang.Class<?> type) Canonical name for a type.
static java.lang.String	toString(byte[] bytes, int base)
static java.lang.Object	valueOf(java.lang.Class<?> type, java.lang.String value) Convert String value to instance.
static java.lang.Object	valueOf(java.lang.String type, java.lang.String value) Convert String value to instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CR

public static int CR

LF

public static int LF

Constructor Detail

TypeUtil

public TypeUtil()

Method Detail

asList

public static <T> java.util.List<T> asList(T[] a)

Array to List.

Works like Arrays.asList(Object...), but handles null arrays.

Returns:

a list backed by the array.

fromName

public static java.lang.Class<?> fromName(java.lang.String name)

Class from a canonical name for a type.

Parameters:

name - A class or type name.

Returns:

A class , which may be a primitive TYPE field..

toName

public static java.lang.String toName(java.lang.Class<?> type)

Canonical name for a type.

Parameters:

type - A class , which may be a primitive TYPE field.

Returns:

Canonical name.

valueOf

public static java.lang.Object valueOf(java.lang.Class<?> type,
                       java.lang.String value)

Convert String value to instance.

Parameters:

type - The class of the instance, which may be a primitive TYPE field.

value - The value as a string.

Returns:

The value as an Object.

valueOf

public static java.lang.Object valueOf(java.lang.String type,
                       java.lang.String value)

Convert String value to instance.

Parameters:

type - classname or type (eg int)

value - The value as a string.

Returns:

The value as an Object.

parseInt

public static int parseInt(java.lang.String s,
           int offset,
           int length,
           int base)
                    throws java.lang.NumberFormatException

Parse an int from a substring. Negative numbers are not handled.

Parameters:

s - String

offset - Offset within string

length - Length of integer or -1 for remainder of string

base - base of the integer

Returns:

the parsed integer

Throws:

java.lang.NumberFormatException - if the string cannot be parsed

parseInt

public static int parseInt(byte[] b,
           int offset,
           int length,
           int base)
                    throws java.lang.NumberFormatException

Parse an int from a byte array of ascii characters. Negative numbers are not handled.

Parameters:

b - byte array

offset - Offset within string

length - Length of integer or -1 for remainder of string

base - base of the integer

Returns:

the parsed integer

Throws:

java.lang.NumberFormatException - if the array cannot be parsed into an integer

parseBytes

public static byte[] parseBytes(java.lang.String s,
                int base)

toString

public static java.lang.String toString(byte[] bytes,
                        int base)

convertHexDigit

public static byte convertHexDigit(byte b)

Parameters:

b - An ASCII encoded character 0-9 a-f A-F

Returns:

The byte value of the character 0-16.

toHex

public static void toHex(byte b,
         java.lang.Appendable buf)

toHexString

public static java.lang.String toHexString(byte b)

toHexString

public static java.lang.String toHexString(byte[] b)

toHexString

public static java.lang.String toHexString(byte[] b,
                           int offset,
                           int length)

fromHexString

public static byte[] fromHexString(java.lang.String s)

dump

public static void dump(java.lang.Class<?> c)

dump

public static void dump(java.lang.ClassLoader cl)

readLine

public static byte[] readLine(java.io.InputStream in)
                       throws java.io.IOException

Throws:

java.io.IOException

jarFor

public static java.net.URL jarFor(java.lang.String className)

call

public static java.lang.Object call(java.lang.Class<?> oClass,
                    java.lang.String method,
                    java.lang.Object obj,
                    java.lang.Object[] arg)
                             throws java.lang.reflect.InvocationTargetException,
                                    java.lang.NoSuchMethodException

Throws:

java.lang.reflect.InvocationTargetException

java.lang.NoSuchMethodException