Class StrBuilder

src/main/java/org/apache/commons/lang3/text/StrBuilder.java:80–3103

Builds a string from constituent parts providing a more flexible and powerful API than StringBuffer. The main differences from StringBuffer/StringBuilder are: Not synchronized Not final Subclasses have direct access to character array Additional methods

 * TextStringBuilder</a> instead
 */
@Deprecated
public class StrBuilder implements CharSequence, Appendable, Serializable, Builder<String> {

    /**
     * The extra capacity for new builders.
     */
    static final int CAPACITY = 32;

    /**
     * Required for serialization support.
     *
     * @see java.io.Serializable
     */
    private static final long serialVersionUID = 7628716375283629643L;

    /** Internal data storage. */
    protected char[] buffer; // TODO make private?
    /** Current size of the buffer. */
    protected int size; // TODO make private?
    /** The new line. */
    private String newLine;
    /** The null text. */
    private String nullText;

    //-----------------------------------------------------------------------
    /**
     * Constructor that creates an empty builder initial capacity 32 characters.
     */
    public StrBuilder() {
        this(CAPACITY);
    }

    /**
     * Constructor that creates an empty builder the specified initial capacity.
     *
     * @param initialCapacity  the initial capacity, zero or less will be converted to 32
     */
    public StrBuilder(int initialCapacity) {
        super();
        if (initialCapacity <= 0) {
            initialCapacity = CAPACITY;
        }
        buffer = new char[initialCapacity];
    }

    /**
     * Constructor that creates a builder from the string, allocating
     * 32 extra characters for growth.
     *
     * @param str  the string to copy, null treated as blank string
     */
    public StrBuilder(final String str) {
        super();
        if (str == null) {
            buffer = new char[CAPACITY];
        } else {
            buffer = new char[str.length() + CAPACITY];
            append(str);