转自:https://blog.csdn.net/zwr_1022/article/details/78583872
解决前的源代码:
public class test {
public static void main(String args[]) {//入口 try {//假设在同一个包中建的一个javaBean: person
Class c = Class.forName("person");//警告出现在这里 try { person factory = (person) c.newInstance(); factory.setName("asdf"); System.out.println(factory.getName()); } catch (InstantiationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }}}------------------------------
- 解决方法1:增加编译注解@SuppressWarnings("unchecked")
public class test {
@SuppressWarnings("unchecked")//增加在这里public static void main(String args[]) { try { Class c = Class.forName("person");//警告出现在这里 try { person factory = (person) c.newInstance(); factory.setName("asdf");...以下省略------------------------------
- 解决方法2:使用泛型通配符
public class test {
public static void main(String args[]) {//入口 try { Class<?> c = Class.forName("person");//这里使用泛型通配符 try { person factory = (person) c.newInstance(); factory.setName("asdf"); System.out.println(factory.getName());...以下省略