Here you can find the source of isPrimitiveClass(String primitiveClassName)
public static boolean isPrimitiveClass(String primitiveClassName)
//package com.java2s; /*/*from w w w. j a va2 s .com*/ * JFox - The most lightweight Java EE Application Server! * more details please visit http://www.huihoo.org/jfox or http://www.jfox.org.cn. * * JFox is licenced and re-distributable under GNU LGPL. */ import java.util.HashMap; import java.util.Map; public class Main { private static Map<String, Class> primitiveStringToClass = new HashMap<String, Class>(); public static boolean isPrimitiveClass(String primitiveClassName) { return primitiveStringToClass.containsKey(primitiveClassName); } public static boolean isPrimitiveClass(Class primitiveClass) { return primitiveStringToClass.containsKey(primitiveClass.getName()); } }