StringBuilderUtil

Facilita o uso de StringBuilder.

• gist: https://gist.github.com/drafa/d97b2563147a55baadea
• métodos:
  • append (Object … obj): StringBuilder -> Permite a concatenação de objetos entre si, adicionando no final da string resultante
  • insert (Object … obj): StringBuilder -> Permite a concatenação de objetos entre si, adicionando no início da string resultante

/**
 * Allows concatenation of objects to one another, adding at the end of the 
 * resulting string
 * see {@link StringBuilder#append(Object) StringBuilder.append(Object obj)}
 * @param obj
 * @return a <code>StringBuilder</code> with all objects
 * @author https://github.com/drafa
 */
public static StringBuilder append(Object... obj) {
    if(obj==null) { return new StringBuilder("null"); }
    StringBuilder sb = new StringBuilder();
    int i=0, l=obj.length;
    while(i<l) { sb.append(obj[i++]); }
    return sb;
}

/**
 * Allows concatenation of objects to one another, adding at the beginning
 * of the resulting string
 * @see {@link StringBuilder#insert(Object) StringBuilder.insert(Object obj)}
 * @param obj
 * @return a <code>StringBuilder</code> with all objects
 * @author https://github.com/drafa
 */
public static StringBuilder insert(Object... obj) {
    if(obj==null) { return new StringBuilder("null"); }
    StringBuilder sb = new StringBuilder();
    int zero=0, i=zero, l=obj.length;
    while(i<l) { sb.insert(zero, obj[i++]); }
    return sb;
}