java动手动脑-2024/9/27
复盘初试代码,解决了直接查询进度报错问题
增加了代码健壮性
PlanInformation
package Exam1;
public class PlanInformation {
private int id; //表示日报流水号，依次加一
private String planid; //表示产品生产批次号（例如：2312-110，有8 位字符组成，前四位表示年月，后三位表示序号）
private String planname; //表示产品名称（例如：“表体”）
private String process; //表示当前工序名称。（例如：“10.00 .射蜡”数字表示工序号，字符表示工序名称）
private String nextprocess; //表示下一接收工序名称。（例如：“11.00 .修蜡”含义同上）
private String operator; //表示当前工序的操作者
private String recipient; //表示下一道工序的接受者
private int plannumber; //表示该产品定要要求的产品数量
private int innumber; //表示从上一道工序的接收的合格产品总数
private int outnumber; //表示当前工序的产品转出总数
private int missnumber; //表示当前工序的产品丢失数量
private int badnumber; //表示当前工序的产品废品数量
private int inspectednumber; //表示当前工序的产品待检验数量
private int statement; //表示该日报记录的状态，0表示初始计划，1表示日报提交，2表示日报确认
public PlanInformation() {
}
public PlanInformation(int id, String planid, String planname, String process, String nextprocess, String operator, String recipient, int plannumber, int innumber, int outnumber, int missnumber, int badnumber, int inspectednumber, int statement) {
this.id = id;
this.planid = planid;
this.planname = planname;
this.process = process;
this.nextprocess = nextprocess;
this.operator = operator;
this.recipient = recipient;
this.plannumber = plannumber;
this.innumber = innumber;
this.outnumber = outnumber;
this.missnumber = missnumber;
this.badnumber = badnumber;
this.inspectednumber = inspectednumber;
this.statement = statement;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getPlanid() {
return planid;
}
public void setPlanid(String planid) {
this.planid = planid;
}
public String getPlanname() {
return planname;
}
public void setPlanname(String planname) {
this.planname = planname;
}
public String getProcess() {
return process;
}
public void setProcess(String process) {
this.process = process;
}
public String getNextprocess() {
return nextprocess;
}
public void setNextprocess(String nextprocess) {
this.nextprocess = nextprocess;
}
public String getOperator() {
return operator;
}
public void setOperator(String operator) {
this.operator = operator;
}
public String getRecipient() {
return recipient;
}
public void setRecipient(String recipient) {
this.recipient = recipient;
}
public int getPlannumber() {
return plannumber;
}
public void setPlannumber(int plannumber) {
this.plannumber = plannumber;
}
public int getInnumber() {
return innumber;
}
public void setInnumber(int innumber) {
this.innumber = innumber;
}
public int getOutnumber() {
return outnumber;
}
public void setOutnumber(int outnumber) {
this.outnumber = outnumber;
}
public int getMissnumber() {
return missnumber;
}
public void setMissnumber(int missnumber) {
this.missnumber = missnumber;
}
public int getBadnumber() {
return badnumber;
}
public void setBadnumber(int badnumber) {
this.badnumber = badnumber;
}
public int getInspectednumber() {
return inspectednumber;
}
public void setInspectednumber(int inspectednumber) {
this.inspectednumber = inspectednumber;
}
public int getStatement() {
return statement;
}
public void setStatement(int statement) {
this.statement = statement;
}
/*public String toString() {
return "PlanInformation{id = " + id + ", planid = " + planid + ", planname = " + planname + ", process = " + process + ", nextprocess = " + nextprocess + ", operator = " + operator + ", recipient = " + recipient + ", plannumber = " + plannumber + ", innumber = " + innumber + ", outnumber = " + outnumber + ", missnumber = " + missnumber + ", badnumber = " + badnumber + ", inspectednumber = " + inspectednumber + ", statement = " + statement + "}";
}*/
}
PlanManagement
package Exam1;
import java.util.ArrayList;
import java.util.Scanner;
public class PlanManagement {
static ArrayList<PlanInformation> planArr = new ArrayList<>();
static String regex1 = "\\d{4}[-]\\d{3}";
static Scanner sc = new Scanner(System.in);
static String[] operatorName = {"柳泽羽","藤艺哲","郝一诺","杨松铎","刘宇恒","陶攀印","阎琪文","郝正一","刘静一"};
static String[] work = {"射蜡","修蜡","面层","封浆","熔化","切割","精磨","调型","检验"};
public static void main(String[] args) {
while(true){
showMenu();
int choose = sc.nextInt();
switch (choose){
case 1 -> generatePlan();
case 2 -> submitPlan();
case 3 -> confirmPlan();
case 4 -> statistics();
default -> System.out.println("该选项不存在");
}
}
}
//生成计划
public static void generatePlan(){
headMenu();
String planid,planname;
int plannumber;
while(true){
System.out.print("产品批次:");
planid = sc.next();
System.out.print("产品名称:");
planname = sc.next();
System.out.print("计划数量:");
plannumber = sc.nextInt();
System.out.println("***********************************************************");
if(planid.matches(regex1)){
headMenu();
System.out.print("产品批次:");
System.out.println(planid);
System.out.print("产品名称:");
System.out.println(planname);
System.out.print("计划数量:");
System.out.println(plannumber);
System.out.println("该产品入库操作已完成，是否提交（Y/N）");
System.out.println("***********************************************************");
String s = sc.next();
if(s.equalsIgnoreCase("Y")){
PlanInformation p = new PlanInformation();
p.setOperator("");
p.setRecipient("");
p.setPlannumber(0);
p.setPlanid(planid);
p.setPlanname(planname);
p.setPlannumber(plannumber);
p.setStatement(0);
planArr.add(p);
System.out.println("入库成功!");
}
break;
}
else {
System.out.println("录入错误,请重新录入信息");
headMenu();
}
}
}
//提交日报
public static void submitPlan(){
headMenu();
System.out.println("请输入8位产品批次号：");
String planId = sc.next();
System.out.println("***********************************************************");
int index = isExist(planId);
if(index != -1){
headMenu();
if(planArr.get(index).getStatement() == 0){
String process,nextprocess;
int innumber,outnumber,missnumber,badnumber,inspectednumber;
innumber = planArr.get(index).getPlannumber();
System.out.print("1、产品批次：");
System.out.println(planArr.get(index).getPlanid());
System.out.print("2、产品名称：");
System.out.println(planArr.get(index).getPlanname());
System.out.print("3、计划数量：");
System.out.println(planArr.get(index).getPlannumber());
System.out.print("4、当前工序：");
process = sc.next();
System.out.print("5、下一工序：");
nextprocess = sc.next();
System.out.print("6、操作员：");
System.out.println(operatorName[seekOperator(process) - 1]);
System.out.print("7、接收员：");
System.out.println(operatorName[seekOperator(nextprocess) - 1]);
System.out.print("8、上一道工序转入数量：");
System.out.println(innumber);
while (true) {
System.out.print("9、转出总数：");
outnumber = sc.nextInt();
System.out.print("10、丢失数量：");
missnumber = sc.nextInt();
System.out.print("11、废品数量：");
badnumber = sc.nextInt();
System.out.print("12、待检验数量：");
inspectednumber = sc.nextInt();
if(innumber == missnumber + badnumber + inspectednumber + outnumber){
System.out.println("是否将修改信息保存提交(Y/N)");
String s = sc.next();
if(s.equalsIgnoreCase("Y")){
planArr.get(index).setProcess(process);
planArr.get(index).setNextprocess(nextprocess);
planArr.get(index).setInnumber(innumber);
planArr.get(index).setOutnumber(outnumber);
planArr.get(index).setMissnumber(missnumber);
planArr.get(index).setOperator(operatorName[seekOperator(process) - 1]);
planArr.get(index).setRecipient(operatorName[seekOperator(nextprocess) - 1]);
planArr.get(index).setBadnumber(badnumber);
planArr.get(index).setInspectednumber(inspectednumber);
planArr.get(index).setStatement(1);
System.out.println("提交成功!");
}
break;
}
else {
System.out.println("录入错误信息,请重新输入三个数量");
}
}
}
else if(planArr.get(index).getStatement() == 2){
System.out.print("1、产品批次：");
System.out.println(planArr.get(index).getPlanid());
System.out.print("2、产品名称：");
System.out.println(planArr.get(index).getPlanname());
System.out.print("3、计划数量：");
System.out.println(planArr.get(index).getPlannumber());
System.out.print("4、当前工序：");
System.out.println(planArr.get(index).getProcess());
System.out.print("5、下一工序：");
System.out.println(planArr.get(index).getNextprocess());
System.out.print("6、操作员：");
System.out.println(planArr.get(index).getOperator());
System.out.print("7、接收员：");
System.out.println(planArr.get(index).getRecipient());
System.out.print("8、上一道工序转入数量：");
System.out.println(planArr.get(index).getInnumber());
while (true) {
int outnumber,missnumber,badnumber,inspectednumber;
System.out.print("9、转出总数：");
outnumber = sc.nextInt();
System.out.print("10、丢失数量：");
missnumber = sc.nextInt();
System.out.print("11、废品数量：");
badnumber = sc.nextInt();
System.out.print("12、待检验数量：");
inspectednumber = sc.nextInt();
if(planArr.get(index).getInnumber() == outnumber + missnumber + badnumber + inspectednumber){
System.out.println("是否将修改信息保存提交(Y/N)");
String s = sc.next();
if(s.equalsIgnoreCase("Y")){
planArr.get(index).setOutnumber(outnumber);
planArr.get(index).setMissnumber(missnumber);
planArr.get(index).setBadnumber(badnumber);
planArr.get(index).setInspectednumber(inspectednumber);
planArr.get(index).setStatement(1);
System.out.println("提交成功!");
}
break;
}
else {
System.out.println("录入错误信息,请重新输入三个数量");
}
}
}
}
else {
System.out.println("库中没有该产品计划");
}
System.out.println("***********************************************************");
}
//确认日报
public static void confirmPlan(){
headMenu();
System.out.println("请输入八位的产品批次：");
String planid = sc.next();
System.out.println("***********************************************************");
int index = isExist(planid);
if(index != -1 && planArr.get(index).getStatement() == 1){
headMenu();
System.out.print("1、产品批次：");
System.out.println(planArr.get(index).getPlanid());
System.out.print("2、产品名称：");
System.out.println(planArr.get(index).getPlanname());
System.out.print("3、计划数量：");
System.out.println(planArr.get(index).getPlannumber());
System.out.print("4、当前工序：");
System.out.println(planArr.get(index).getProcess());
System.out.print("5、下一工序：");
System.out.println(planArr.get(index).getNextprocess());
System.out.print("6、操作员：");
System.out.println(planArr.get(index).getOperator());
System.out.print("7、接收员：");
System.out.println(planArr.get(index).getRecipient());
System.out.print("8、上一道工序转入数量：");
System.out.println(planArr.get(index).getInnumber());
System.out.print("9、转出总数：");
System.out.println(planArr.get(index).getOutnumber());
System.out.print("10、丢失数量：");
System.out.println(planArr.get(index).getMissnumber());
System.out.print("11、废品数量：");
System.out.println(planArr.get(index).getBadnumber());
System.out.print("12、待检验数量：");
System.out.println(planArr.get(index).getInspectednumber());
System.out.println("***********************************************************");
int i = seekOperator(planArr.get(index).getProcess());
int j = seekOperator(planArr.get(index).getNextprocess());
System.out.println("是否确认结果(Y/N)");
String s = sc.next();
if(s.equalsIgnoreCase("Y")){
int outnumber = planArr.get(index).getOutnumber();
int missnumber = planArr.get(index).getMissnumber();
int badnumber = planArr.get(index).getBadnumber();
int inspectednumber = planArr.get(index).getInspectednumber();
planArr.get(index).setInnumber(outnumber - missnumber - badnumber - inspectednumber);
planArr.get(index).setProcess(work[i]);
planArr.get(index).setNextprocess(work[j]);
planArr.get(index).setOperator(operatorName[i]);
planArr.get(index).setRecipient(operatorName[j]);
planArr.get(index).setStatement(2);
System.out.println("确认成功!");
headMenu();
System.out.print("1、产品批次：");
System.out.println(planArr.get(index).getPlanid());
System.out.print("2、产品名称：");
System.out.println(planArr.get(index).getPlanname());
System.out.print("3、计划数量：");
System.out.println(planArr.get(index).getPlannumber());
System.out.print("4、当前工序：");
System.out.println(planArr.get(index).getProcess());
System.out.print("5、下一工序：");
System.out.println(planArr.get(index).getNextprocess());
System.out.print("6、操作员：");
System.out.println(planArr.get(index).getOperator());
System.out.print("7、接收员：");
System.out.println(planArr.get(index).getRecipient());
System.out.print("8、上一道工序转入数量：");
System.out.println(planArr.get(index).getInnumber());
}
}
else {
System.out.println("库中没有该产品批次");
confirmPlan();
}
}
//统计进度
public static void statistics(){
for (int i = 0; i < planArr.size(); i++) {
headMenu();
System.out.print("1、产品批次：");
System.out.println(planArr.get(i).getPlanid());
System.out.print("2、产品名称：");
System.out.println(planArr.get(i).getPlanname());
System.out.print("3、计划数量：");
System.out.println(planArr.get(i).getPlannumber());
System.out.print("4.完成数量: ");
if(planArr.get(i).getOperator().equals("检验")){
System.out.println(planArr.get(i).getInnumber());
System.out.print("5.剩余数量: ");
System.out.println(planArr.get(i).getPlannumber() - planArr.get(i).getInnumber());
}
else {
System.out.println(0);
System.out.print("5.剩余数量: ");
System.out.println(planArr.get(i).getPlannumber());
}
System.out.println("***********************************************************");
}
}
//展示菜单
public static void showMenu(){
headMenu();
System.out.println(" 1、生成计划");
System.out.println(" 2、提交日报");
System.out.println(" 3、确认日报");
System.out.println(" 4、统计进度");
System.out.println("***********************************************************");
}
//菜单头部
public static void headMenu(){
System.out.println("***********************************************************");
System.out.println(" 石家庄铁道大学无限23软件开发有限公司");
System.out.println(" Mes系统2023版");
System.out.println("***********************************************************");
}
//判断产品批次号是否存在,返回位置
public static int isExist(String id){
for (int i = 0; i < planArr.size(); i++) {
if(id.equals(planArr.get(i).getPlanid())){
return i;
}
}
return -1;
}
public static int seekOperator(String process){
return process.charAt(0) - '0';
}
}
枚举类
public class EnumTest {
public static void main(String[] args) {
Size s=Size.SMALL;
Size t=Size.LARGE;
//s和t引用同一个对象？
System.out.println(s==t); //
//是原始数据类型吗？
System.out.println(s.getClass().isPrimitive());
//从字符串中转换
Size u=Size.valueOf("SMALL");
System.out.println(s==u); //true
//列出它的所有值
for(Size value:Size.values()){
System.out.println(value);
}
}
}
enum Size{SMALL,MEDIUM,LARGE};
输出
false
false
true
SMALL
MEDIUM
LARGE
结论:
- 枚举类型的每个枚举值都是一个单例对象，不同的枚举值代表不同的对象。
- 枚举类型不是原始数据类型，它是一种特殊的类类型。
Size.valueOf("SMALL")方法通过传入字符串 "SMALL" 来获取对应的枚举值。Size.values()方法返回一个包含所有枚举值的数组。
原码,反码,补码
正数的原码 = 反码 = 补码
复数的补码 = 反码 + 1
计算机中的存储和计算都是以补码的形式进行的
public class a02Test2 {
public static void main(String[] args) {
int a = 100;
int b = -50;
System.out.println(a >> 1);
System.out.println(b >> 1);
}
}
输出
50
-25
java中的数是用二进制表示的
package TestCode3;
public class TestDouble {
public static void main(String args[]) {
System.out.println("0.05 + 0.01 = " + (0.05 + 0.01));
System.out.println("1.0 - 0.42 = " + (1.0 - 0.42));
System.out.println("4.015 * 100 = " + (4.015 * 100));
System.out.println("123.3 / 100 = " + (123.3 / 100));
}
}
输出
0.05 + 0.01 = 0.060000000000000005
1.0 - 0.42 = 0.5800000000000001
4.015 * 100 = 401.49999999999994
123.3 / 100 = 1.2329999999999999
import java.math.BigDecimal;
public class TestBigDecimal
{
public static void main(String[] args)
{
BigDecimal f1 = new BigDecimal("0.05");
BigDecimal f2 = BigDecimal.valueOf(0.01);
BigDecimal f3 = new BigDecimal(0.05);
System.out.println("下面使用String作为BigDecimal构造器参数的计算结果：");
System.out.println("0.05 + 0.01 = " + f1.add(f2));
System.out.println("0.05 - 0.01 = " + f1.subtract(f2));
System.out.println("0.05 * 0.01 = " + f1.multiply(f2));
System.out.println("0.05 / 0.01 = " + f1.divide(f2));
System.out.println("下面使用double作为BigDecimal构造器参数的计算结果：");
System.out.println("0.05 + 0.01 = " + f3.add(f2));
System.out.println("0.05 - 0.01 = " + f3.subtract(f2));
System.out.println("0.05 * 0.01 = " + f3.multiply(f2));
System.out.println("0.05 / 0.01 = " + f3.divide(f2));
}
}
输出
下面使用String作为BigDecimal构造器参数的计算结果：
0.05 + 0.01 = 0.06
0.05 - 0.01 = 0.04
0.05 * 0.01 = 0.0005
0.05 / 0.01 = 5
下面使用double作为BigDecimal构造器参数的计算结果：
0.05 + 0.01 = 0.06000000000000000277555756156289135105907917022705078125
0.05 - 0.01 = 0.04000000000000000277555756156289135105907917022705078125
0.05 * 0.01 = 0.0005000000000000000277555756156289135105907917022705078125
0.05 / 0.01 = 5.000000000000000277555756156289135105907917022705078125
double 类型是采用二进制的科学计数法来存储数值的。具体来说：
- 它用 1 位表示符号位，11 位表示指数位，52 位表示尾数位。
- 这种存储方式决定了它不能精确表示所有的十进制小数。例如，十进制的 0.1 在二进制中是一个无限循环小数，只能用近似值来表示。
package TestCode3;
public class Test1 {
public static void main(String[] args) {
int X=100;
int Y=200;
System.out.println("X+Y="+X+Y);
System.out.println(X+Y+"=X+Y");
}
}
输出
X+Y=100200
300=X+Y
字符串拼接-从前往后
生成100以内随机算式
import java.util.Random;
public class randomMath {
public static void main(String[] args) {
Random ch = new Random();
Random r = new Random();
Character[] chArr = {'+','-','*','/'};
for (int i = 0; i < 30; i++) {
int first = r.nextInt(100);
int second = r.nextInt(99)+1;
char c = chArr[ch.nextInt(4)];
System.out.print(first);
System.out.print(c);
System.out.println(second + " = ");
}
}
}
