代码如下:import java.lang.reflect.*;
class UserInfo {
public String name,password;
public String getName(){
return name;
}
}
class UserInfoMore extends UserInfo {
public String email,address;
public void setEmail(String email) { this.email = email;
}
}
public class GetParentClass{ public static String getParentClass(UserInfoMore urm){ Class o = urm.getClass().getSuperclass();
System.out.println("hello"+o.getName());
return o.getName(); }
public static void main(String[] args){ UserInfoMore urm = new UserInfoMore(); System.out.println("hello world"+getParentClass(urm));
}
}
为什么会先执行hello,在执行hello world的内容
class UserInfo {
public String name,password;
public String getName(){
return name;
}
}
class UserInfoMore extends UserInfo {
public String email,address;
public void setEmail(String email) { this.email = email;
}
}
public class GetParentClass{ public static String getParentClass(UserInfoMore urm){ Class o = urm.getClass().getSuperclass();
System.out.println("hello"+o.getName());
return o.getName(); }
public static void main(String[] args){ UserInfoMore urm = new UserInfoMore(); System.out.println("hello world"+getParentClass(urm));
}
}
为什么会先执行hello,在执行hello world的内容
System.out.println("方法名");
再调行就可以了
System.out.println("hello world"+getParentClass(urm));
是先调用getParentClass(urm) 获得一个String str后
这时要输出的 String ("hello world"+str) 全部读入完毕才输出;
并不是读入一个字节输出一个字节