이 프로그램을 사용하면 판매를 입력하고 주당 판매 세를 계산할 수 있습니다. 더블 워드 (예 : 뉴저지)를 읽을 때 프로그램에서 오류가 발생합니다. 일부분에는 helo가 필요합니다.문자열 토크 나이저를 사용하여 상태 이름을 읽으려고 할 때 오류가 발생했습니다.
import java.text.DecimalFormat;
import java.util.*;
import java.io.*;
import java.lang.reflect.Array;
import java.nio.CharBuffer;
import java.awt.*;
//import java.awt.event.*;
import javax.lang.model.type.ArrayType;
import javax.swing.*;
import javax.swing.event.*;
public class PJ5 extends JFrame implements ListSelectionListener
{String []States = new String[100];
double []statetax = new double[100];
double sales;
JPanel p1;
JList StateList;
JTextField salesField;
private JTextField taxField;
public static void main(String []args)
{
PJ5 x = new PJ5();
x.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
x.setTitle("Sales tax calculator");
x.setSize(350, 250);
x.setVisible(true);
} // main
public PJ5() // constructor
{
String s;
StringTokenizer st;
int k=0;
try
{
BufferedReader inFile = new BufferedReader(new FileReader("C:\\Users\\Owner\\Documents\\taxrates.txt"));
while ((s= inFile.readLine()) != null)
{
st = new StringTokenizer(s);
States[k]=(st.nextToken());
statetax[k] = Double.valueOf(st.nextToken());
++k;
} // while not EOF
inFile.close();
} catch (Exception e) { System.err.println(e); }
JPanel p1 =new JPanel();
p1.setLayout(new GridLayout(2,1));
p1.add(new JLabel("Sales amount:"));
salesField= new JTextField(5);
salesField.setEditable(true);
p1.add(salesField);
p1.add(new JLabel("tax:"));
taxField= new JTextField(4);
taxField.setEditable(false);
p1.add(taxField);
add(p1,BorderLayout.NORTH);
pack();
setVisible(true);
JPanel p = new JPanel();
StateList = new JList(States); // create a JList object
StateList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
JScrollPane sp = new JScrollPane(StateList); // adding scrolling capability
p.add(sp);
getContentPane().add(p, BorderLayout.SOUTH);
// Event registration
StateList.addListSelectionListener(this);
} // constructor
// Event handling
public void valueChanged(ListSelectionEvent event)
{
DecimalFormat dollar = new DecimalFormat("0.00");
double tax;
sales=Double.parseDouble(salesField.getText());
tax=sales* (statetax[StateList.getSelectedIndex()]/100);
taxField.setText("$"+dollar.format(tax));
} // valueChanged
}
여기에 주정부 세율이 적용되는 텍스트 파일이 있습니다.
Alabama 4.0
Alaska 0.
Arizona 5.6
Arkansas 6.0
California 8.25
Colorado 2.9
Connecticut 6.0
Delaware 2.07
Florida 6.0
Georgia 4.0
Hawaii 4.0
Idaho 6.0
Illinois 6.25
Indiana 7.0
Iowa 6.0
Kansas 5.3
Kentucky 6.0
Louisian, 4.0
Maine 5.0
Maryland 6.0
Massachusetts 6.25
Michigan 6.0
Minnesota 6.875
Mississippi 7.0
Missouri 4.225
Montana 0.
Nebraska 5.5
Nevada 6.85
New Hampshire 0.0
New Jersey 7.0
New Mexico 5.375
New York 4.0
North Carolina 4.5
North Dakota 5.0
Ohio 5.5
Oklahoma 4.5
Oregon 0.
Pennsylvania 6.0
Rhode Island 7.0
South Carolina 6.0
South Dakota 4.0
Tennessee 7.0
Texas 6.25
Utah 5.95
Vermont 6.0
Virginia 5.0
West Virginia 6.0
Wisconsin 5.0
Washington 6.5
Washington DC 5.75
Wyoming 4.0
오류가 무엇 구조 조정해야 할 수 있습니다? – Mob
java.lang.NumberFormatException : 입력 문자열의 경우 : "Hampshire" – Angel918