import java.lang.reflect.Array;import java.lang.reflect.Constructor;import java.lang.reflect.InvocationTargetException;import java.util.regex.Pattern;import java.util.regex.Matcher;import java.util.Arrays;import static java.lang.System.out;public class ArrayCreator {    private static String s = "java.math.BigInteger bi[] = { 123, 234, 345 }";    private static Pattern p = Pattern.compile("^\\s*(\\S+)\\s*\\w+\\[\\].*\\{\\s*([^}]+)\\s*\\}");    public static void main(String... args) {        Matcher m = p.matcher(s);        if (m.find()) {            String cName = m.group(1);            String[] cVals = m.group(2).split("[\\s,]+");            int n = cVals.length;            try {                Class<?> c = Class.forName(cName);                Object o = Array.newInstance(c, n);                for (int i = 0; i < n; i++) {                    String v = cVals[i];                    Constructor ctor = c.getConstructor(String.class);                    Object val = ctor.newInstance(v);                    Array.set(o, i, val);                }                Object[] oo = (Object[])o;                out.format("%s[] = %s%n", cName, Arrays.toString(oo));            // production code should handle these exceptions more gracefully            } catch (ClassNotFoundException x) {                x.printStackTrace();            } catch (NoSuchMethodException x) {                x.printStackTrace();            } catch (IllegalAccessException x) {                x.printStackTrace();            } catch (InstantiationException x) {                x.printStackTrace();            } catch (InvocationTargetException x) {                x.printStackTrace();            }        }    }}