face.java

Java编写个人所得税计算器, 可以自定义所得税表进行运算, 程序包含完整的Document和测试运行环境

package face;
import java.io.*;
import calculator.*;
import exception.ManageException;
/**
 * 这个类是面向用户的接口,用户所看到的正常操作的结果都有这个类实现
 * @author ZiHi
 * @param int income 输入的收入
 * @param int cho,choo 用户的选择
 */
public class Face {
	/**
	 * 这里是程序的主函数,也是用户执行代码的入口,为用户提供用于计算个人所得税的菜单和相应的操作指示
	 * @param args
	 * @throws IOException 主要的异常有用户输入类型的错误异常和文件打开异常以及其他IO异常
	 */
	public static void main(String args[]) throws IOException
	{
		int income;
		int cho=1;
		int choo;
		BufferedReader keyboard = 
			new BufferedReader(new InputStreamReader(System.in));
		TaxTable taxtable;
		taxtable=new TaxTable();
		System.out.println( "Welcom to Personal Tax Calculator");
		taxtable.Show();
		do{
			System.out.println( "Please choose your opreate");
			System.out.println( "1.Input your income");
			System.out.println( "2.Change the tax table");
			System.out.println( "3.Quit");
			try{
				cho=Integer.parseInt(keyboard.readLine());		
				if(cho==1){
					System.out.print( "Please input your input: ");
					income = Integer.parseInt(keyboard.readLine());
					Calculator calculator=new Calculator(income,taxtable);
					calculator.Maketax();
					System.out.println( "The tax you needed to take is: "+calculator.GetTax());
				}
				else if(cho==2)
				{
					System.out.println( "Please choose the opreate you wnat to do");
					System.out.println( "1.Add rank");
					System.out.println( "2.Delete rank");
					System.out.println( "3.Set rank");
					System.out.println( "Any other number for Back");
					String a=keyboard.readLine();
					try{
						
						choo=Integer.parseInt(a);
					
						if(choo==3)
						{
							taxtable.Show();
							System.out.println( "Please input the rank you wnat to change");
							int cho1;  int cho2; double cho3;
							cho1=Integer.parseInt(keyboard.readLine());
							System.out.println( "Please input the base you wnat to change");
							cho2=Integer.parseInt(keyboard.readLine());
							System.out.println( "Please input the rate you wnat to change");
							cho3=Double.parseDouble(keyboard.readLine());
							taxtable.SetRank(cho1, cho2, cho3);
							taxtable.Show();
						}
						
						else if(choo==1)
						{
							taxtable.Show();
							System.out.println( "Please input the level you want to add");
							int in1;
							in1=Integer.parseInt(keyboard.readLine());
							System.out.println( "Please input the rate you want to add");
							double in2;
							in2=Double.parseDouble(keyboard.readLine());
							taxtable.AddRank(in1, in2);
							taxtable.Show();
						}
						else if(choo==2)
						{
							taxtable.Show();
							System.out.println( "Please input the rank you want to del");
							int in1;
							in1=Integer.parseInt(keyboard.readLine());
							taxtable.DeletRank(in1);
							taxtable.Show();
						}
						else if(cho!=4){System.out.println("Go back");}
					}
					catch(IOException e){
						new ManageException(e);
					}
					catch(NumberFormatException e){
						new ManageException(e);
					}
				}
				else if(cho!=3){System.out.println("Please input the right choice!");}
			}
			catch(IOException e){
				new ManageException(e);
			}
			catch(NumberFormatException e){
				new ManageException(e);
			}
			if(cho==3){
				System.out.println("Do you want to save the taxtable?");
				System.out.println("1.Yes");
				System.out.println("2.No");
				int inp=Integer.parseInt(keyboard.readLine());
				if(inp==1)taxtable.Save();
				else if(inp!=2){System.out.println("Please input the right choice!");}
			}
		}while(cho!=3);
		
	}

}