systemin的博客

Struts2 Value Stack Contents 中取值、多个集合数组示例

package 第三章; import java.util.Scanner; public class DVD管理器 { public static void main(String[] args) { Scanner input = new Scanner(System.in); int end=0; //名称，状态，借出日期，借出次数， String name[] =new String[50]; name[0]="三国演义"; name[1]="盗墓笔记"; name[2]="傻子上学"; boolean state[] = new boolean[50]; state[0]=true; state[1]=false; state[2]=true; int date [] = new int[50]; date[0]=0; date[1]=5; date[2]=0; int count[] = new int[50]; count[0]=12; count[1]=0; count[2]=1; String zeng; int dates; do{ System.out.println("欢迎使用迷你DVD管理器"); System.out.println("-------------------------"); System.out.println("1.新增DVD"); System.out.println("2.查看DVD"); System.out.println("3.删除DVD"); System.out.println("4.借出DVD"); System.out.println("5.归还DVD"); System.out.println("6.退出DVD"); System.out.println("-------------------------"); System.out.print("请选择:"); int index=-1; switch(input.nextInt()){ case 1: System.out.println("-->新增DVD"); System.out.print("请输入书名："); for(int i=0;i<name.length-1;i++){ if(name[i]==null){ index=i; break; } } if(index!=-1){ name[index]=input.next(); state[index]=true; count[index]=0; date[index]=0; System.out.println("新增《"+name[index]+"》成功"); } System.out.println("**************************"); System.out.println("输入0返回"); break; case 2: System.out.println("-->查看DVD"); System.out.println("序号"+"\t"+"状态"+"\t"+" "+"名称"+"\t"+" "+"借出日期"+"\t"+" "+"借出次数"); for(int i=0;i<name.length-1;i++){ if(name[i]==null)break; System.out.print(+(i+1)+"\t"); System.out.print(state[i]==true?"可借阅"+" ":"已借阅"+" "); System.out.print("《"+name[i]+"》"+"\t"); System.out.print(" "+date[i]+"日"+"\t"); System.out.print(count[i]+"次"+"\t"+"\n"); } System.out.println("**************************"); System.out.println("输入0返回"); break; case 3: System.out.println("-->删除DVD"); System.out.print("请输入书名："); zeng=input.next(); for(int i=0;i<name.length-1;i++){ if(name[i]==null){ System.out.println("这本本书不是我们的，无法删除"); break; } else if(name[i].equals(zeng) && state[i]==false){ System.out.println("找到您要找的书了，但是已借阅无法删除"); break; } else if(name[i].equals(zeng) && state[i]==true){ index=i; System.out.println("删除《"+zeng+"》成功"); break; } } if(index!=-1){ for(int i=index;i<name.length-1;i++){ name[i]=name[i+1]; } name[name.length-1]=null; } else System.out.println("没有您要找的书"); System.out.println("**************************"); System.out.println("输入0返回"); break; case 4: System.out.println("-->借出DVD"); System.out.print("请输入书名："); zeng=input.next(); for(int i=0;i<name.length-1;i++){ if(name[i]==null){ System.out.println("没有找到您要找的书无法借出"); break; }else if(name[i].equals(zeng) && state[i]==false){ System.out.println("找到您要找的书了，但是库存只有一本已借阅"); break; }else if(name[i].equals(zeng) && state[i]==true){ System.out.print("借出日期："); dates=input.nextInt(); while(dates<1 || dates>31){ if(dates<1 ||dates>31) System.out.println("请重新输入一月为1~31"); dates=input.nextInt(); } System.out.println("借阅《"+zeng+"》成功"); state[i]=false; date[i]=dates; count[i]++; break; } } System.out.println("**************************"); System.out.println("输入0返回"); break; case 5: System.out.println("-->归还DVD"); System.out.print("请输入书名："); zeng=input.next(); int jing=0; for(int i=0;i<name.length-1;i++){ if(name[i]==null){ System.out.println("这不是我们的书无需归还"); break; }else if(name[i].equals(zeng) && state[i]==true){ System.out.println("找到您要找的书了，但是未借阅不需要归还"); break; }else if(name[i].equals(zeng) && state[i]==false){ System.out.print("归还日期："); dates=input.nextInt(); while(dates<1 || dates>31 || dates<date[i]){ if(dates<1 ||dates>31){ System.out.println("输入格式有问题请重新输入一月为1~31"); dates=input.nextInt(); } else if(dates<date[i]){ System.out.println("归还日期必须大于借出日期"); dates=input.nextInt(); } } state[i]=true; jing=(dates-date[i])*1; System.out.println("借阅时间为："+date[i]); System.out.println("归还时间为："+dates); System.out.println("借阅租金为："+jing); System.out.println("归还《"+zeng+"》成功"); date[i]=0; break; } } System.out.println("**************************"); System.out.println("输入0返回"); break; case 6: System.out.println("谢谢使用"); return; } end =input.nextInt(); }while(end==0); } }