Here you can find the source of isNumeric(int pColumnType)
private static boolean isNumeric(int pColumnType)
//package com.java2s; import java.sql.*; public class Main { private static boolean isNumeric(int pColumnType) { return (pColumnType == Types.INTEGER || pColumnType == Types.DECIMAL || pColumnType == Types.TINYINT || pColumnType == Types.BIGINT || pColumnType == Types.DOUBLE || pColumnType == Types.FLOAT || pColumnType == Types.NUMERIC || pColumnType == Types.REAL || pColumnType == Types.SMALLINT); }/* www . j av a 2 s . c o m*/ }