exercise2_13.java

来自「java程序设计 机械工业出版社 书籍代码」· Java 代码 · 共 53 行

import javax.swing.JOptionPane;

public class Exercise2_13 {
  public static void main(String args[]) {
    // Obtain input
    String name = JOptionPane.showInputDialog(null, 
      "Enter employee's full name:",
      "Exercise2_13 Input", JOptionPane.QUESTION_MESSAGE);

    String hoursString = JOptionPane.showInputDialog(null, 
      "Enter number of hours worked in a week:",
      "Exercise2_13 Input", JOptionPane.QUESTION_MESSAGE);
    double hours = Double.parseDouble(hoursString);
     
    String rateString = JOptionPane.showInputDialog(null, 
      "Enter hourly pay rate:",
      "Exercise2_13 Input", JOptionPane.QUESTION_MESSAGE);
    double payRate = Double.parseDouble(rateString);
    
    String fedTaxWithholdingRateString = JOptionPane.showInputDialog(null, 
      "Enter federal tax withholding rate:",
      "Exercise2_13 Input", JOptionPane.QUESTION_MESSAGE);
    double fedTaxWithholdingRate = Double.parseDouble(fedTaxWithholdingRateString);

    String stateTaxWithholdingRateString = JOptionPane.showInputDialog(null, 
      "Enter state tax withholding rate:",
      "Exercise2_13 Input", JOptionPane.QUESTION_MESSAGE);
    double stateTaxWithholdingRate = Double.parseDouble(stateTaxWithholdingRateString);

    double grossPay = hours * payRate;
    double fedTaxWithholding = grossPay * fedTaxWithholdingRate;
    double stateTaxWithholding = grossPay * stateTaxWithholdingRate;
    double totalDeduction = fedTaxWithholding + stateTaxWithholding;
    double netPay = grossPay - totalDeduction;

    // Obtain output
    String out = "Employee Name: " + name + "\n\n";
    out += "Hours Worked:" + "  " + hoursString + '\n';
    out += "Pay Rate:" + "  $" + rateString + '\n';
    out += "Gross Pay:" + "  $" + grossPay + '\n';
    out += "Deductions:\n";
    out += "  Federal Withholding (" + fedTaxWithholdingRate * 100 + "%):" + "  $" + (int)(fedTaxWithholding * 100) / 100.0 + '\n';
    out += "  State Withholding (" + stateTaxWithholdingRate * 100 + "%):" + "  $" + (int)(stateTaxWithholding * 100) / 100.0 + '\n';
    out += "  Total Deduction:" + "  $" + (int)(totalDeduction * 100) / 100.0 + '\n';
    out += "Net Pay:" + "   $" + (int)(netPay * 100) / 100.0;
 
    System.out.print(out);
    JOptionPane.showMessageDialog(null, out,
      "Exercise2_13 Output", JOptionPane.INFORMATION_MESSAGE);
    
    System.exit(0);
  }
}