java.lang
Class StringBuilder

java.lang.Object
  java.lang.StringBuilder

All Implemented Interfaces:

CharSequence

public class StringBuilder
extends Object
implements CharSequence

An expandable string of characters. Actually not very expandable! 09/25/2001 added number formatting thanks to Martin E. Nielsen. You must ensure that the buffer is large enough to take the formatted number.

Author:

Martin E. Nielsen, Sven Köhler

Constructor Summary

StringBuilder()

StringBuilder(CharSequence seq)

StringBuilder(int length)

StringBuilder(String aString)

Method Summary

StringBuilder	append(boolean aBoolean)
StringBuilder	append(char aChar)
StringBuilder	append(char[] c)
StringBuilder	append(char[] c, int off, int len)
StringBuilder	append(CharSequence cs)
StringBuilder	append(CharSequence cs, int start, int end)
StringBuilder	append(double aDouble)
StringBuilder	append(float aFloat)
StringBuilder	append(int i)
StringBuilder	append(long aLong)
StringBuilder	append(Object aObject)
StringBuilder	append(String s)
StringBuilder	append(StringBuffer sb)
StringBuilder	appendCodePoint(int cp)
int	capacity()
char	charAt(int i)
StringBuilder	delete(int start, int end)
StringBuilder	deleteCharAt(int index)
void	ensureCapacity(int minCapacity)
void	getChars(int start, int end, char[] dst, int dstStart) Retrieves the contents of the StringBuilder in the form of an array of characters.
int	indexOf(String str)
int	indexOf(String str, int fromIndex)
int	lastIndexOf(String str)
int	lastIndexOf(String str, int fromIndex)
int	length()
void	setCharAt(int i, char ch)
void	setLength(int newLen)
CharSequence	subSequence(int start, int end)
String	substring(int start)
String	substring(int start, int end)
String	toString()
void	trimToSize()

Methods inherited from class java.lang.Object

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

Constructor Detail

StringBuilder

public StringBuilder()

StringBuilder

public StringBuilder(CharSequence seq)

StringBuilder

public StringBuilder(int length)

StringBuilder

public StringBuilder(String aString)

Method Detail

ensureCapacity

public void ensureCapacity(int minCapacity)

delete

public StringBuilder delete(int start,
                            int end)

deleteCharAt

public StringBuilder deleteCharAt(int index)

append

public StringBuilder append(String s)

append

public StringBuilder append(Object aObject)

append

public StringBuilder append(boolean aBoolean)

append

public StringBuilder append(char aChar)

append

public StringBuilder append(char[] c)

append

public StringBuilder append(char[] c,
                            int off,
                            int len)

append

public StringBuilder append(CharSequence cs)

append

public StringBuilder append(StringBuffer sb)

append

public StringBuilder append(CharSequence cs,
                            int start,
                            int end)

append

public StringBuilder append(int i)

append

public StringBuilder append(long aLong)

append

public StringBuilder append(float aFloat)

append

public StringBuilder append(double aDouble)

appendCodePoint

public StringBuilder appendCodePoint(int cp)

capacity

public int capacity()

indexOf

public int indexOf(String str)

indexOf

public int indexOf(String str,
                   int fromIndex)

lastIndexOf

public int lastIndexOf(String str)

lastIndexOf

public int lastIndexOf(String str,
                       int fromIndex)

toString

public String toString()

Specified by:

toString in interface CharSequence

Overrides:

toString in class Object

charAt

public char charAt(int i)

Specified by:

charAt in interface CharSequence

setCharAt

public void setCharAt(int i,
                      char ch)

setLength

public void setLength(int newLen)

length

public int length()

Specified by:

length in interface CharSequence

getChars

public void getChars(int start,
                     int end,
                     char[] dst,
                     int dstStart)

Retrieves the contents of the StringBuilder in the form of an array of characters.

substring

public String substring(int start)

substring

public String substring(int start,
                        int end)

subSequence

public CharSequence subSequence(int start,
                                int end)

Specified by:

subSequence in interface CharSequence

trimToSize

public void trimToSize()