数组与Object的关系及其反射类型(浅试)

package Reflect.array;import java.lang.reflect.Array;import java.util.Arrays;import java.util.List;public class TestRelectArray {/** * @param args */public static void main(String[] args) {int [] a1=new int[]{1,2,3};int [] a2=new int[4];int [][] a3=new int[][]{{11,22},{33,44}};//String [] a4=new String[3]{"a","b","c"};//报错String [] a4=new String[]{"a","b","c"};Object aobj1=a1;//一维的int[]是Object的//Object [] aobj2=a1; //报错  基本类型(int)不是Object Object    aobj3=a4;Object [] aobj4=a4;Object  aobj5=a3;Object [] aobj6=a3;System.out.println(a1);//[I@c3c749/*//不符合jdk1.4的规则，List asList(Object[] a)。就调用  public static <T> List<T> asList(T... a) {return new ArrayList<T>(a);    }*/System.out.println("a4:"+a4);//[Ljava.lang.String;@150bd4dSystem.out.println(Arrays.asList(a1));//[[I@c3c749]//符合jdk1.4的规则，List asList(Object[] a)System.out.println(Arrays.asList(a4));//[a, b, c]System.out.println(Arrays.asList(a3));//[[I@1888759, [I@6e1408]System.out.println(a1.getClass());//class [ISystem.out.println(a3.getClass());//class [[ISystem.out.println(a4.getClass());//class [Ljava.lang.String;System.out.println(a1.getClass()==a2.getClass()); //trueSystem.out.println(a1.getClass().getName());//[ISystem.out.println(a1.getClass().getSuperclass()); //class java.lang.ObjectSystem.out.println(a3.getClass().getSuperclass()); //class java.lang.ObjectSystem.out.println(a4.getClass().getSuperclass());//class java.lang.ObjectObject[] aObjects=new Object[]{"a",1};System.out.println(aObjects[0].getClass().getName());printObject(a4);}public static void printObject(Object obj){Class class1=obj.getClass();//如果是数组 ，用反射技术if(class1.isArray()){int len=Array.getLength(obj);for(int i=0;i<len;i++){System.out.println(Array.get(obj, i));}}else{System.out.println(obj);}}}