StringBuffer工具类整理(一)

package com.gzcivil.utils;

/**
 * 同StringBuffer
 * 
 * @author Dragon
 * @time 2013-3-1
 */
public class StrBuffer {
    private StringBuffer sb = null;

    public StrBuffer() {
        sb = new StringBuffer();
    }

    public StrBuffer(Object... objects) {
        sb = new StringBuffer();
        append(objects);
    }

    public StringBuffer append(Object... objects) {
        if (objects != null) {
            for (Object o : objects) {
                sb.append(o);
            }
        }
        return sb;
    }

    public int length() {
        return sb.length();
    }

    public int indexOf(String string) {
        // TODO Auto-generated method stub
        return sb.indexOf(string);
    }

    public int lastIndexOf(String string) {
        return sb.lastIndexOf(string);
    }

    public int indexOf(String subString, int start) {
        // TODO Auto-generated method stub
        return sb.indexOf(subString, start);
    }

    public String substring(int start, int end) {
        // TODO Auto-generated method stub
        return sb.substring(start, end);
    }

    public String toString() {
        return sb.toString();
    }

    public char charAt(int index) {
        return sb.charAt(index);
    }

    public boolean equals(Object obj) {
        if (this == obj)
            return true;

        if (obj != null && obj.getClass() == this.getClass()) {
            StrBuffer sb = (StrBuffer) obj;
            int len = length();
            if (len != sb.length())
                return false;
            int index = 0;
            while (index != len) {
                if (charAt(index) != sb.charAt(index))
                    return false;
                else
                    index++;
            }
            return true;
        }
        return false;
    }
}