StringBuffer

java.lang
Class StringBuffer

java.lang.Object
  java.lang.StringBuffer

All Implemented Interfaces:: Serializable, Appendable, CharSequence

See Also:: Top Examples, Source Code, StringBuilder, String

public StringBuffer append(boolean b)

See Also:: append(java.lang.String), String.valueOf(boolean)

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public StringBuffer append(char c)

See Also:: Appendable, appended, String.valueOf(char)

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public StringBuffer append(char[] str)

See Also:: appended, String.valueOf(char[])

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public StringBuffer append(char[] str,
                           int offset,
                           int len)

See Also:: appended, String.valueOf(char[],int,int)

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public StringBuffer append(double d)

See Also:: append(java.lang.String), String.valueOf(double)

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public StringBuffer append(float f)

See Also:: append(java.lang.String), String.valueOf(float)

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public StringBuffer append(int i)

See Also:: append(java.lang.String), String.valueOf(int)

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public StringBuffer append(CharSequence s)

See Also:: Appendable

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public StringBuffer append(CharSequence s,
                           int start,
                           int end)

See Also:: IndexOutOfBoundsException, Appendable

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public StringBuffer append(Object obj)

See Also:: append(java.lang.String), String.valueOf(java.lang.Object)

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public StringBuffer append(String str)

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[20]Growing stringbuffer
By Max Okist on 2003/10/29 10:00:52 Rate

StringBuffer sb = new StringBuffer ( "The" ) ; 
 sb.append ( " StringBuffer" ) ; 
 sb.append ( " is" ) ; 
 sb.append ( " growing" ) ; 
 sb.append ( " with every line of code" ) ;

public StringBuffer append(StringBuffer sb)

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public StringBuffer append(long lng)

See Also:: append(java.lang.String), String.valueOf(long)

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public StringBuffer appendCodePoint(int codePoint)

See Also:: appended, Character.toChars(int), Character.charCount(codePoint)

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public int capacity()

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public char charAt(int index)

See Also:: length(), IndexOutOfBoundsException, CharSequence

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public int codePointAt(int index)

See Also:: length()

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[1510]Read a file into a stringbuffer
By Anonymous on 2005/08/08 19:18:16 Rate

ArrayList list1=null; 
  
  
 ArrayList list2=null; 
  
  
 FileInputStream in=null; 
  
  
 BufferedReader buff=null; 
  
  
 StringBuffer stBuff= new StringBuffer (  ) ; 
  
  
 Map HMap=new HashMap (  ) ; 
  
  
 Connection connection =null; 
  
  
 // List keys=new ArrayList ( HMap.keySet (  )  ) ; 
  
  
 Iterator iterator= HMap.keySet (  ) .iterator (  ) ; 
  
  
 try 
  
  
  {  
  
  
 in=new FileInputStream ( "C:\\temp\\Input.txt" ) ; 
  
  
 buff=new BufferedReader ( new InputStreamReader ( in )  ) ; 
  
  
 list1=new ArrayList (  ) ; 
  
  
 list2=new ArrayList (  ) ; 
  
  
 int i; 
  
  
 while  ( true )  
  
  
  {  
  
  
 String s=buff.readLine (  ) ; 
  
  
 if ( s==null )  
  
  
  {  
  
  
 break; 
  
  
  }  
  
  
 stBuff.append ( s ) ;  
  
  
  }  
  
  
 // System.out.println ( "Lines in string buffer"+ stBuff ) ; 
  
  
 stBuff.append ( "*" ) ; 
  
  
 System.out.println ( "Lines in string buffer"+ stBuff ) ;

public int codePointBefore(int index)

See Also:: length()

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public int codePointCount(int beginIndex,
                          int endIndex)

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public StringBuffer delete(int start,
                           int end)

See Also:: StringIndexOutOfBoundsException

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public StringBuffer deleteCharAt(int index)

See Also:: StringIndexOutOfBoundsException

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[439]Remove a specific character from a stringbuffer
By Anonymous on 2003/10/07 01:32:02 Rate
stk.deleteCharAt ( stk.length ( ) -1 ) ;

public void ensureCapacity(int minimumCapacity)

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public void getChars(int srcBegin,
                     int srcEnd,
                     char[] dst,
                     int dstBegin)

See Also:: IndexOutOfBoundsException, NullPointerException

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[1719]getChars
By manikaverma_4u { at } yahoo { dot } com on 2006/03/10 08:50:27 Rate
how to use getchars

public int indexOf(String str)

See Also:: NullPointerException

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[444]Lets use StringBuffer
By sadik_khan { at } yahoo { dot } com on 2003/10/09 03:53:31 Rate

    public String letsUseStringBuffer ( String s )  
      {  
         StringBuffer stringbuffer = new StringBuffer (  ) ; 
         int i = s.lastIndexOf ( "-" ) ; 
         if ( i != -1 )  
             stringbuffer.append ( "Appended this text" ) ; 
         return stringbuffer.toString (  ) ; 
      }

public int indexOf(String str,
                   int fromIndex)

See Also:: NullPointerException

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public StringBuffer insert(int offset,
                           boolean b)

See Also:: length(), insert(int, java.lang.String), String.valueOf(boolean), StringIndexOutOfBoundsException

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[1131]Insert with Boolean
By aminmc { at } gmail { dot } com on 2004/11/20 04:17:44 Rate

public class InsertWithBoolean  
  {  
      
     public static void main ( String [  ]  args )   
      {  
        boolean flag = false; 
        StringBuffer sb = new StringBuffer ( "Test value: " ) ; 
        sb.insert ( 5, flag ) ; 
        System.out.println  ( sb ) ; 
      }  
      
  }  
  
  
 Prints out:  Test falsevalue:

public StringBuffer insert(int offset,
                           char c)

See Also:: length(), IndexOutOfBoundsException, inserted, String.valueOf(char)

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public StringBuffer insert(int offset,
                           char[] str)

See Also:: StringIndexOutOfBoundsException, inserted, String.valueOf(char[])

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public StringBuffer insert(int index,
                           char[] str,
                           int offset,
                           int len)

See Also:: StringIndexOutOfBoundsException

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public StringBuffer insert(int offset,
                           double d)

See Also:: length(), insert(int, java.lang.String), String.valueOf(double), StringIndexOutOfBoundsException

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public StringBuffer insert(int offset,
                           float f)

See Also:: length(), insert(int, java.lang.String), String.valueOf(float), StringIndexOutOfBoundsException

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public StringBuffer insert(int offset,
                           int i)

See Also:: length(), insert(int, java.lang.String), String.valueOf(int), StringIndexOutOfBoundsException

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public StringBuffer insert(int dstOffset,
                           CharSequence s)

See Also:: IndexOutOfBoundsException

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public StringBuffer insert(int dstOffset,
                           CharSequence s,
                           int start,
                           int end)

See Also:: IndexOutOfBoundsException

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public StringBuffer insert(int offset,
                           Object obj)

See Also:: length(), insert(int, java.lang.String), String.valueOf(java.lang.Object), StringIndexOutOfBoundsException

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[447]Insert into a StringBuffer
By sadik_khan { at } yahoo { dot } com on 2003/10/10 04:40:29 Rate

    public String letsUseStringBuffer ( String s )  
      {  
         StringBuffer stringbuffer = new StringBuffer (  ) ; 
         int i = s.lastIndexOf ( "-" ) ; 
         if ( i != -1 )  
             stringbuffer.insert ( i,"This text is inserted at ith  position" ) ; 
         return stringbuffer.toString (  ) ; 
      }

public StringBuffer insert(int offset,
                           String str)

See Also:: length(), StringIndexOutOfBoundsException

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[375]StringBuffer insert and append
By Sandra on 2005/04/15 11:22:27 Rate

observacao.append ( "observ 1" )  
 len = observacao.length (  ) ; 
  
  
 observacao.append ( " observ 2" ) ;  
                  
 for ( int i = len + 1; i  <  93 - observacao.length (  ) ; i++ )  
  { observacao.insert ( i, "-" ) ;  }  
  
  
 out.write ( " < option value='" + "1" + "' > " ) ; 
 out.write ( observacao.toString (  )  ) ; 
 out.write ( " < /option > " ) ;

public StringBuffer insert(int offset,
                           long l)

See Also:: length(), insert(int, java.lang.String), String.valueOf(long), StringIndexOutOfBoundsException

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public int lastIndexOf(String str)

See Also:: NullPointerException

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[446]Appending StringBuffer
By sadik_khan { at } yahoo { dot } com on 2003/10/09 04:02:23 Rate

    public String letUseStringBuffer ( String s )  
      {  
         StringBuffer stringbuffer = new StringBuffer (  ) ; 
         int i = s.lastIndexOf ( "-" ) ; 
         if ( i != -1 )  
             stringbuffer.append ( "Yes it had - " )  ) ; 
         return stringbuffer.toString (  ) ; 
      }

public int lastIndexOf(String str,
                       int fromIndex)

See Also:: NullPointerException

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public int length()

See Also:: CharSequence

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[1130]StringBuffer length test
By aminmc { at } gmail { dot } com on 2004/11/20 04:09:04 Rate

public class StringBufferLengthTest 
  {  
      
     public static void main ( String [  ]  args )   
      {  
        StringBuffer sb = new StringBuffer ( "This is my life" ) ; 
        int size = sb.length (  ) ; 
         
        System.out.println  ( "Length of StringBuffer is " + size ) ; 
      }  
      
  }

public int offsetByCodePoints(int index,
                              int codePointOffset)

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public StringBuffer replace(int start,
                            int end,
                            String str)

See Also:: StringIndexOutOfBoundsException

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[445]getR3CharacteristicValue
By sadik_khan { at } yahoo { dot } com on 2005/09/23 16:28:57 Rate

    public String getR3CharacteristicValue ( String s )  
      {  
         StringBuffer stringbuffer = new StringBuffer (  ) ; 
         int i = s.lastIndexOf ( "-" ) ; 
         if ( i != -1 )  
             stringbuffer.replace ( i,"I dont need -" ) ; 
             return stringbuffer.toString (  ) ; 
      }

public StringBuffer reverse()

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[1129]Reverse a String
By aminmc { at } gmail { dot } com on 2004/11/20 04:06:41 Rate

StringBuffer sb = new StringBuffer ( "My name is Amin" ) ; 
 sb.reverse (  ) ; 
 System.out.println  ( sb ) ; 
  
  
 Output would be: nimA si eman yM

public void setCharAt(int index,
                      char ch)

See Also:: length(), IndexOutOfBoundsException

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public void setLength(int newLength)

See Also:: length(), IndexOutOfBoundsException

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public StringBuffer()

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public StringBuffer(int capacity)

See Also:: NegativeArraySizeException

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public StringBuffer(CharSequence seq)

See Also:: NullPointerException

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public StringBuffer(String str)

See Also:: NullPointerException

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public CharSequence subSequence(int start,
                                int end)

See Also:: IndexOutOfBoundsException

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[1157]Adds char into a string
By Pedro P??rez on 2004/11/30 05:06:28 Rate

/** 
 * Adds char into a string  
 * */   
 public static String addCharAfter ( String st, char c, int pos )   
  {  
   String ret =""; 
   if  ( pos  >  0 && pos  < = st.length (  )  )  
    {  
      StringBuffer sb = new StringBuffer ( st ) ; 
      ret =""; 
      ret = sb.subSequence ( 0,pos ) .toString (  )  + c + sb.subSequence ( pos, st.length (  )  ) ; 
    }  
   else 
    {  
     ret = st; 
    }  
   return ret; 
  }

public String substring(int start)

See Also:: StringIndexOutOfBoundsException

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public String substring(int start,
                        int end)

See Also:: StringIndexOutOfBoundsException

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public String toString()

See Also:: CharSequence

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public void trimToSize()

See Also:: capacity()

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java.lang Class StringBuffer

java.lang
Class StringBuffer