这个JAVA程序编译之后报错颇多，谁帮我改改！

public class Testovermethod {
public Testovermethod() {
}
//父类 Person
class People{
String name;
int age;
int getAge(){
return age;
}
void setAge(int i){
age=i;
}
String getName;
}
void setName(String str){
name=str;
}
public String getInfo(){
return"Name:"+name+"\n"+"age:"+age;
}
}
//子类 Student
class Student extends Person{
String Univ;
String getUniv(){
return Univ;
}
void setuniv(String str){
Univ = str;
}
public String getInfo(){
return "Name:"+name+"\nage:"+age+"\nUniversity:"+Univ;
}

}
public class Testovermethod{
public static void main(String[]args)
{Student bini=new Student ();
bini.setAge(19);
bini.setName("doudou");
bini.setUniv("Tshinghua University");
System.out.println(bini.getInfo());
}
}

1.首先，前三行是什么，请删除掉

2.父类注释都说Person，并且Student也继承了Person，为什么Person类，类名却是People？请改为class Person

目测应该就只有这几个地方有问题。

//public class Testovermethod //{ // public Testovermethod() { // // } // 此处定义类无效，首先没有程序入口main方法，其次充分定义类导致错误

//父类 Person class People { String name; int age; int getAge() { return age; } void setAge(int i) { age=i; } String getName; // }//此处括号多余，导致下面的setname、getinfo方法不能正常使用 void setName(String str) { name=str; } //}此处的括号也多余 public String getInfo() { return"Name:"+name+"\n"+"age:"+age; } }

//}此处括号多余

//子类 Student class Student extends People{//person这个类没有定义，应该改成People String Univ; String getUniv() { return Univ; } void setuniv(String str) { Univ = str; } public String getInfo() { return "Name:"+name+"\nage:"+age+"\nUniversity:"+Univ; }

}

public class Testovermethod { public static void main(String[]args) { Student bini=new Student (); bini.setAge(19); bini.setName("doudou"); bini.setuniv("Tshinghua University");//此处书写错误，注意大小写 System.out.println(bini.getInfo()); } }

public class Person { protected String name; protected int age; public int getAge(){ return age; } public void setAge(int i){ age=i; } String getName; public void setName(String str){ name=str; } public String getInfo(){ return"Name:"+name+"\n"+"age:"+age; } }

public class Testovermethod { private Person Person; public Testovermethod() { } public Person getPerson() { return Person; } public void setPerson(Person person) { Person = person; } }

public class Student extends Person { String Univ; String getUniv(){ return Univ; } public void setuniv(String str){ Univ = str; } public String getInfo(){ return "Name:"+name+"\nage:"+age+"\nUniversity:"+Univ; } }

public class Test { public static void main(String[]args) {Student bini=new Student (); bini.setAge(19); bini.setName("doudou"); bini.setuniv("Tshinghua University"); System.out.println(bini.getInfo()); } }

感觉你的有点乱 重新写了下

字段或方法前面一般加个访问修饰符会好点

不加默认的default 只能在当前类中使用

在其它类中是不能直接调用的

前三行没用，删掉

//父类 Person class People{ String name; int age; int getAge(){ return age; } void setAge(int i){ age=i; }

void setName(String str){ name=str; } String getName(String str){ //这里给你写全了 return name; } public String getInfo(){ return"Name:"+name+"\n"+"age:"+age; } } //子类 Student class Student extends People{ //这里继承的是People，你写错了 String Univ; String getUniv(){ return Univ; }

void setUniv(String str){ Univ = str; }

public String getInfo(){ return "Name:"+name+"\nage:"+age+"\nUniversity:"+Univ; }

}

class Testovermethod{ public static void main(String[]args){ Student bini=new Student (); bini.setAge(19); bini.setName("doudou"); bini.setUniv("Tshinghua University"); //这里和你的方法名不一致，原来是setuniv，但是你调用的却是大写 System.out.println(bini.getInfo()); } }

还有很多花括号匹配都不正确，你代码要写的规范点，什么作用的代码块要分开，仔细一点a