第二次博客

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
BankBusiness bankbusiness = new BankBusiness();
bankbusiness.welcome();
bankbusiness.open(in.next(), in.next());
bankbusiness.deposit(in.next(), in.nextDouble());
bankbusiness.withdraw(in.next(), in.nextDouble());
bankbusiness.withdraw(in.next(), in.nextDouble());
bankbusiness.withdraw(in.next(), in.nextDouble());
bankbusiness.welcomeNext();
}
}

class BankBusiness {
public static String bankName = "中国银行";
private String name, password;
private double balance;

public static void welcome() {
System.out.println(bankName + "欢迎您的到来！");
}

public static void welcomeNext() {
System.out.print("请收好您的证件和物品，欢迎您下次光临！");
}

public void open(String name, String password) {
this.name = name;
this.password = password;
balance = 0;
}

public void deposit(String a, double b) {
if (a.equals(this.password)) {
balance = b;
 System.out.println("您的余额有" + balance + "元。");

} else {
System.out.println("您的密码错误！");
}
}

public void withdraw(String m, double x) {
if(m.equals(this.password))
{
if(x <= balance)
{
System.out.printf("请取走钞票，您的余额还有%.1f元。\n", balance - x);
}
else
System.out.println("您的余额不足！");
}
else
{
System.out.println("您的密码错误！");
}
}

}

 分析：这套题很基础，主要是创建银行类。

原题：

我的代码：

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
Point point1=new Point(in.nextDouble(),in.nextDouble());
Point point2=new Point(in.nextDouble(),in.nextDouble());
Line line=new Line(point1,point2,in.next());
line.display();
}
}

class Point {
private double x;
private double y;
public Point()
{

}
Point(double x,double y)
{
if((x<0||x>200)||(y<0||y>200))
{
this.y=y;
this.x=x;
}
else
{

System.out.print("Wrong Format");
System.exit(0);
}
}

void setX(double x)
{
this.x=x;
}
double getX()
{
return this.x;
}
void setY(double y)
{
this.y=y;
}

double getY()
{return this.y;
}
void display()
{
System.out.printf("(%.2f,%.2f)\n", this.x,this.y);
}
}

class Line {
private Point point1;
private Point point2;
private String color;
public Line()
{
}
Line(Point point1,Point point2,String color)
{
this.color=color;
this.point1=point1;
this.point2=point2;
}

void setColor()
{
this.color=color;
}
String getColor(String color){
return this.color;
}
void setpoint1(Point point1) {
this.point1=point1;
}

Point getPoint1() {
return point1;}
void setpoint2(Point point2) {
this.point2=point2;
}

Point getPoint2() {
return point2;
}




Point getPoint2(Point point2) {
return point2;
}
double getDistance() {
double d=0;
d=Math.sqrt(Math.pow(point1.getX()-point2.getX(),2)+Math.pow(point1.getY()-point2.getY(), 2));
return d;
}

void display() {
System.out.println("The line's color is:"+this.color);
System.out.println("The line's begin point's Coordinate is:");
point1.display();
System.out.println("The line's end point's Coordinate is:");
point2.display();
System.out.print("The line's length is:");
System.out.printf("%.2f",getDistance());
}

}

 分析：创建一个point类和一个line类，其中point类有x，y属性，line有point'和color属性。line中需要输出distance。

3.踩坑心得：我认为我还是对于正则表达式运用不熟练，每次需要运用正则表达式处理字符串是总会因为数据处理不到位而导致部分数据输出不出来。另外，对于子类父类的继承也不到位，导致父类的部分属性不能被子类继承。

4.改进建议：在正则表达式方面下功夫，注重基础，对于多态子类父类继承下面多多练习，在平时的编程中多用子类父类，尽量不要在多个类重复创建同一个属性，这样会使程序的效率变慢。

5。总结：现在我对于基础的创建类比较熟练，能够合理的创建类，但是对于数据处理上还很不足，对于子类父类多态这些方法能够增强程序效率还不是很好，所以我的程序还显得很啰嗦，效率也不高，在今后的学习中我要针对这些方面加强，不断完善自己所写的程序。另外对于字符串处理，这是我的弱项，正则表达式是处理字符串的最常用方法，在这方面我也要多下功夫。