【続き】Java変数タイプ認識の3つの方式(補足)

package com.cxyapi.oo;

import java.util.Date;

import com.cxyapi.generics.TypeToolsGenerics;

/**          
 * @author cxy @ www.cxyapi.com
 */
public class TypeToolsTest2
{
	private static int ii=0;
	private static Date d=new Date();
	
	public static void main(String[] args) throws Exception
	{
		//   ：         
		System.out.println(TypeToolsTest2.class.getDeclaredField("ii").getType()); 
		System.out.println(TypeToolsTest2.class.getDeclaredField("d").getType()); 
		System.out.println("----------------------");
		
		//   ：isInstance        ，        
		System.out.println(Integer.class.isInstance(ii));
		System.out.println(Date.class.isInstance(d));
		System.out.println("----------------------");
		
		//   ：        
		System.out.println(TypeToolsGenerics.getType(ii));
		System.out.println(TypeToolsGenerics.getType(2.2));
		System.out.println(TypeToolsGenerics.getType(true));
		System.out.println(TypeToolsGenerics.getType('a'));
		System.out.println(TypeToolsGenerics.getType(d));
	}
}

package com.cxyapi.generics;

import java.util.HashMap;
import java.util.Map;


/**          
 * @author cxy @ www.cxyapi.com
 */
public class TypeToolsGenerics
{
	private static final Map<String,String> typeMap=new HashMap<String,String>();
	static
	{
		typeMap.put("java.lang.Byte", "byte");
		typeMap.put("java.lang.Short", "short");
		typeMap.put("java.lang.Integer", "int");
		typeMap.put("java.lang.Long", "long");
		typeMap.put("java.lang.Double", "double");
		typeMap.put("java.lang.Float", "float");
		typeMap.put("java.lang.Character", "char");
		typeMap.put("java.lang.Boolean", "boolean");
	}
	public final static <T> String getType(T t)
	{
		if(t==null){return null;}
		String typeInfo=t.getClass().getName();
		return typeMap.containsKey(typeInfo)?typeMap.get(typeInfo):typeInfo; 
	}
}