public abstract class Student {
private String name;
private String no;
public abstract void printlnfo() {
}
public Student() {
no="20100701020xx";
name="lx";
}
public static void print() {
System.out.println("name:" +name);
System.out.println("no:" +no);
}
}
public class MaleStudent extents Student {
private String gender;
public MaleStudent(String gender) {
this.gender=gender;
}
public static void printlnfo() {
System.out.println("name:"+name);
System.out.println("no:+no");
System.out.println("gender:+gender");
}
public static void main(String[] args) {
MaleStudent m=new MaleStudent();
printlnfo();
}
}
------解决方案--------------------
有很多地方需要改动，代码贴到下面你自己找一下问题吧，看你语法还是很生疏，找本教材学习下
- Java code
abstract class Student { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getNo() { return no; } public void setNo(String no) { this.no = no; } private String no; public abstract void printlnfo(); public Student() { no="20100701020xx"; name="lx"; } public void print() { System.out.println("name:" +this.getName()); System.out.println("no:" +no); }}public class MaleStudent extends Student { private String gender; public MaleStudent(String gender) { super(); this.gender=gender; } @Override public void printlnfo() { System.out.println("name:"+this.getName()); System.out.println("no:+no"); System.out.println("gender:+gender"); } public static void main(String[] args) { MaleStudent m=new MaleStudent("man"); m.printlnfo(); }}