怎么在这个程序中加入泛型机制

Question

import java.lang.reflect.*;
import java.io.*;
import java.util.Properties;
public class Account{
private String userName;
private String password;
public Account(String userName,String password){
}
public String getPassword(){
return password;
}
public void setPassword(String password){
this.password=password;
}
public String getUserName(){
return userName;
}
public void setUesrName(String uesrname){
this.userName=userName;
}
public static Object createObject(String className,String userName,String password){
Object object=null;
try{
Class c1=Class.forName(className);

Class[] typeClass=new Class[2];
typeClass[0]=java.lang.String.class;
typeClass[1]=java.lang.String.class;
java.lang.reflect.Constructor constructor=c1.getConstructor(typeClass);

Object[] inObjects=new Object[2];
object=constructor.newInstance(inObjects);

Class[] parClasses=new Class[1];
parClasses[0]=java.lang.String.class;
Method method=c1.getMethod("setUserName",parClasses);

Object[] objects=new Object[1];
objects[0]=userName;
method.invoke(object,objects);

Class[] parClasses2=new Class[1];
parClasses2[0]=java.lang.String.class;
Method method2=c1.getMethod("setPassword",parClasses2);

Object[] objects2=new Object[1];
objects2[0]=password;
method2.invoke(object,objects2); 
}
catch (Exception e){
  e.printStackTrace();
}
   return object;
}
public static void main(String[] args){
try{
Properties p=new Properties();
p.load(new FileInputStream("class.properties"));

String className=p.getProperty("className");
String userName=p.getProperty("userName");
String password=p.getProperty("password");

Account account=(Account)createObject(className,userName,password);
System.out.println(account.getUserName());
System.out.println(account.getPassword());
}catch(Exception e){
   e.printStackTrace();
}

}
}我做的是一个反射的程序，没加入泛型编译不能通过，请各位高手帮帮忙？

Answer 1

在你的方法上加上@SuppressWarnings("unchecked")
注解就可以了

Answer 2

那是Class类报的警告吧？
这种和泛型相关的警告无所谓
@SuppressWarnings("rawtypes") 掉吧

Answer 3

class Account{
    private String userName;
    private String password;
    public Account(String userName,String password){
    }
    public String getPassword(){
    return password;
    }
    public void setPassword(String password){
    this.password=password;
    } 
    public String getUserName(){
    return userName;
    } 
    public void setUesrName(String userName){
    this.userName=userName;
    }
    public static Object createObject(String className,String userName,String password){
    Object object=null;
    try{
    Class<?> c1=Class.forName(className);    Class<?>[] typeClass=new Class[2];
    typeClass[0]=java.lang.String.class;
    typeClass[1]=java.lang.String.class;
    java.lang.reflect.Constructor<?> constructor=c1.getConstructor(typeClass);    Object[] inObjects=new Object[2];
    object=constructor.newInstance(inObjects);    Class<?>[] parClasses=new Class[1];
    parClasses[0]=java.lang.String.class;
    Method method=c1.getMethod("setUserName",parClasses);    Object[] objects=new Object[1];
    objects[0]=userName;
    method.invoke(object,objects);    Class<?>[] parClasses2=new Class[1];
    parClasses2[0]=java.lang.String.class;
    Method method2=c1.getMethod("setPassword",parClasses2);    Object[] objects2=new Object[1];
    objects2[0]=password;
    method2.invoke(object,objects2);  
    }
    catch (Exception e){
    e.printStackTrace(); 
    }
    return object;
    } 
    public static void main(String[] args){
    try{
    Properties p=new Properties();
    p.load(new FileInputStream("class.properties"));    String className=p.getProperty("className");
    String userName=p.getProperty("userName");
    String password=p.getProperty("password");    Account account=(Account)createObject(className,userName,password);
    System.out.println(account.getUserName());
    System.out.println(account.getPassword());
    }catch(Exception e){
    e.printStackTrace(); 
    }    }
    }