Appends an Object to an Object array. : Array Insert Remove « Collections Data Structure « Java






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Appends an Object to an Object array.

import java.lang.reflect.Array; /********************************************************************* * Array manipulation for Java 1.1+. * * <p> * Java 1.1 compatible. * </p> * * @see * ArrayLib2 * * @version * 2003-04-07 * @since * 2001-04-06 * @author * <a href="http://croftsoft.com/">David Wallace Croft</a>*/publicclass Util{ /********************************************************************* * Appends an Object to an Object array. * * <p> * Example: * <code> * <pre> * String [ ] stringArray * = ( String [ ] ) ArrayLib.append ( new String [ ] { }, "" ); * </pre> * </code> * </p> * * @throws NullArgumentException * * If either argument is null. * * @return * * Returns a new array with the same component type as the old array. *********************************************************************/publicstatic Object [ ] append ( Object [ ] oldArray, Object o ) //////////////////////////////////////////////////////////////////////  { Object [ ] newArray = ( Object [ ] ) Array.newInstance ( oldArray.getClass ( ).getComponentType ( ), oldArray.length + 1 ); System.arraycopy ( oldArray, 0, newArray, 0, oldArray.length ); newArray [ oldArray.length ] = o; return newArray; } }








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