下列有关类声明的代码片段，哪一项是正确的？( )
package school;
import java.sql.*;
class Student {
}import java.sql.*;
package school;
class Student {
}package school;
class Student {
}
import java.sql.*;package school;
import java.sql.*;
private String name;
class Student {
}package-->import-->class-->定义变量方法
