对于下列代码段，说法正确的是（? ? ）。 public class Student { ????? private String name; ????? private int age; ?? ?? public Student() { ?? ??? ?this("李红", 25); ? ?? ?? } ?? ?? public Student(String curName, int curAge) { ?? ??? ?this.name = curName; ?? ??? ?age = curAge;? ? ?? ?? } ?? ?? public void setName(String name) { ?? ??? ?this.name = name; ?? ?? } ????? @Override ?? ?? public String toString() { ?? ??? ?return this.getName() + "," + this.age; ?? ?? } ?? ?? ……… }