摘要：
package work; public class Student { String name; double grade; public Student(){ } public Student(String name,double score){ this.name=name; this.gra 阅读全文
摘要：
package work; public class Point { int x; int y; public Point(){ } public Point(int x0,int y0){ this.x=x0; this.y=y0; } public void movePoint(int dx,i 阅读全文