Examples of java.lang.StringBuffer

java.lang.StringBuffer
A thread-safe, mutable sequence of characters. A string buffer is like a {@link String}, but can be modified. At any point in time it contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls.
String buffers are safe for use by multiple threads. The methods are synchronized where necessary so that all the operations on any particular instance behave as if they occur in some serial order that is consistent with the order of the method calls made by each of the individual threads involved.
The principal operations on a StringBuffer are the append and insert methods, which are overloaded so as to accept data of any type. Each effectively converts a given datum to a string and then appends or inserts the characters of that string to the string buffer. The append method always adds these characters at the end of the buffer; the insert method adds the characters at a specified point.
For example, if z refers to a string buffer object whose current contents are "start", then the method call z.append("le") would cause the string buffer to contain "startle", whereas z.insert(4, "le") would alter the string buffer to contain "starlet".
In general, if sb refers to an instance of a StringBuffer, then sb.append(x) has the same effect as sb.insert(sb.length(), x).
Whenever an operation occurs involving a source sequence (such as appending or inserting from a source sequence) this class synchronizes only on the string buffer performing the operation, not on the source.
Every string buffer has a capacity. As long as the length of the character sequence contained in the string buffer does not exceed the capacity, it is not necessary to allocate a new internal buffer array. If the internal buffer overflows, it is automatically made larger. As of release JDK 5, this class has been supplemented with an equivalent class designed for use by a single thread, {@link StringBuilder}. The StringBuilder class should generally be used in preference to this one, as it supports all of the same operations but it is faster, as it performs no synchronization. @author Arthur van Hoff @version 1.101, 11/17/05 @see java.lang.StringBuilder @see java.lang.String @since JDK1.0

     * Serialises the child sequence and returns it as a string.
     * 
     * @return a String of the serialised child sequence.
     */
    private String serialiseChildSequence() {
        StringBuffer buffer = new StringBuffer();
        for(Iterator it = childSequence.iterator(); it.hasNext();) {
            Integer child = (Integer)it.next();
            buffer.append("/" + child.toString());
        }
        return buffer.toString();
    }

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  private StringBuffer value;
  public int line;
  public char ttype;
  
  public QASHToken() {
    this.value = new StringBuffer();
    this.ttype=0;
  }

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  public QASHToken(double token, char ttype, int line) {
    this(Integer.toString((int)token),ttype,line);
  }
  
  public QASHToken(char token, char ttype, int line) {
    this(new StringBuffer().append(token),(char)ttype,line);
  }

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  public QASHToken(String token, int ttype, int line) {
    this(token,(char)ttype,line);
  }
  
  public QASHToken(String token, char ttype, int line) {
    this(new StringBuffer().append(token),ttype,line);
  }

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    if (value.length()==0)
      return token;
    // try numerical append, if it fails, try string append
    if ((ttype==TT_NUMBER)&(token.ttype==TT_NUMBER)) {
      try {
        value = new StringBuffer(Integer.toString((this.intValue()+token.intValue())));
      }
      catch (NumberFormatException e) {
        value.append(token.value.toString());
      }
    }

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         * Return a string representation of the given map, but only for
         * those entries where the value has a size greater than 1
         * @param map a map of key to Set of value
         */
    private final String printDuplicatesFromMap(final Map map){
        final StringBuffer sb = new StringBuffer();
        final Iterator it = map.entrySet().iterator();
        Map.Entry entry = getNextDuplicate(it);
        if (entry != null){
            printEntry(sb, entry);
            while ((entry = getNextDuplicate(it)) != null){
                sb.append(", ");
                printEntry(sb, entry);
            }
        }
        return sb.toString();
    }

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         * Return a string representation of the given map, but only for
         * those entries where the value has a size greater than 1
         * @param map a map of key to Set of value
         */
    private final String printDuplicatesFromMap(final Map map){
        final StringBuffer sb = new StringBuffer();
        final Iterator it = map.entrySet().iterator();
        Map.Entry entry = getNextDuplicate(it);
        if (entry != null){
            printEntry(sb, entry);
            while ((entry = getNextDuplicate(it)) != null){
                sb.append(", ");
                printEntry(sb, entry);
            }
        }
        return sb.toString();
    }

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    /** Prepare a printable version of this instance.
     * @return the String representation of this object
     */    
    public String toString() {
        StringBuffer buf = new StringBuffer ("LoggerJDK14: ");  //NOI18N
        buf.append (" name: "); buf.append (getName()); //NOI18N
        buf.append (", super: "); buf.append (super.toString());  //NOI18N
        buf.append (", logging level: "); buf.append (getLevel()); //NOI18N
        return buf.toString();
    }

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    private static final String width   = new String("-width");
    private static final String color   = new String("-color");
    private static final String style   = new String("-style");


    private String formatPadding(String[] saSide) {
        StringBuffer sb = new StringBuffer(14);
        return sb.append(padding).append(saSide[0]).toString();
    }

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        StringBuffer sb = new StringBuffer(14);
        return sb.append(padding).append(saSide[0]).toString();
    }


    private String formatColor(String[] saSide) {
        StringBuffer sb = new StringBuffer(19);
        return sb.append(border).append(saSide[0]).append(color).toString();
    }

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