sample9_16.java

来自「Java SE 6.0前11章示的示例代码,简单易学」· Java 代码 · 共 23 行

package wyf.jc;
class Father
{}
class Son extends Father
{}
public class Sample9_16
{
	public static void main(String[] args)
	{
		//普通引用情况
		Son s=null;
		if(s instanceof Father)	{}
		if(s instanceof String)	{}
		//原始类型数组的情况
		int[] intArray=null;
		if(intArray instanceof long[]){}
		//引用数组的情况		
		Son[] sonArray=null;
		if(sonArray instanceof Father[]){}
		if(sonArray instanceof String[]){}	
	}
}