泛型类型通配符?的使用
package test;
import java.util.ArrayList; import java.util.List;
public class TestGenericMethod {
/** * @param args */
public static void main(String[] args) { List<Object>list=new ArrayList<Object>(); list.add("1"); list.add(1); list.add("abc"); list.add(0.5); list.add(3L); test(list); System.out.println("ok"); }
public static void test(List<?> ts){ for(int i=0;i<ts.size();i++){ System.out.println(ts.get(i)+" It's me"); } }
}
I'm falling off the sky all alone.The courage inside is gonna break the fall. Nothing can dim my light within.
I am That I am
程序 = 数据结构 + 算法