JavaDemo_0909_0059
class Person{
}
public class JavaDemo_0909_0059
{
public static void main(String[] args)
{
Object obj=new int[]{1,2,3}; //向上转型
if(obj instanceof int[])
{
int[] data=(int[]) obj;
for(int x:data)
{
System.out.println(x);
}
}
}
}
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