如何从JDatePicker中提取和重置日期？

Question

我使用this帖子中的代码将jdatepicker放入我的简单程序中（下面只是jdatepicker所需的代码）。它有效，但我有两个问题：

1。如何将选定日期转换为String？

2。如何在jdatepicker文本框中重置日期？

def multiFunctionalPrinter 
    puts "How many times do you want to print?"
    number = gets
    puts "-------------------------------------------"
    puts "What do you want to print?"
    text = gets.chomp                                                    #chomping variable to format it for decision making
    puts "-------------------------------------------"
    puts "Do you want to print in different lines (Y or N)?"
    answer = gets.chomp                                                  #chomping variable to format it for decision making
    puts "-------------------------------------------"
    puts "Do you want to add quotation marks (') (Y or N)?"
    marks = gets.chomp                                                   #chomping variable to format it for decision making

    if answer == "Y" && marks == "Y"                                     # Different lines: ON , Quotation marks: ON
        1.upto(number.to_i) {puts "'" + text.to_s + "'"}
    elsif answer == "Y" && marks == "N"                                  # Different lines: ON , Quotation marks: OFF
        1.upto(number.to_i) {puts text.to_s}
    elsif answer == "Y" && marks != "Y" || marks != "N"                  # Different lines: ON , Quotation marks: INVALID
        puts "Answer '#{marks}' is invalid. Program is terminating."
    elsif answer == "N" && marks == "Y"                                  # Different lines: OFF , Quotation marks: ON
        puts "Do you want to split what you print? (Y or N)"
        answer2 = gets.chomp
        if answer2 == "Y"                                                # Split: ON 
            1.upto(number.to_i) {print "'" + text.to_s + "' "}
            print "\n"
        elsif answer2 == "N"                                             # Split: OFF
            1.upto(number.to_i) {print "'" + text.to_s + "'"}
        else
            puts "Answer '#{answer2}' is invalid. Program is terminating."
        end 
    elsif answer == "N" && marks == "N"                                  # Different lines: OFF , Quotation marks: OFF
        puts "Do you want to split what you print? (Y or N)"
        answer2 = gets.chomp
        if answer2 == "Y"                                                # Split: ON
            1.upto(number.to_i) {print text.to_s + " "}
        elsif answer2 == "N"                                             # Split: OFF
            1.upto(number.to_i) {print text.to_s}
        else
            puts "Answer '#{answer}' is invalid. Program is terminating."
        end 
    else
        puts "Answer '#{answer}' or '#{marks}' is invalid. Program is terminating."
    end 
    puts "--------------------------------------------"
end 

multiFunctionalPrinter

Answer 1

1. 如何将选定日期转换为字符串？

   datePicker.getJFormattedTextField().getText();

2. 如何在JDatePicker文本框中重置日期？

   datePicker.getJFormattedTextField().setText("");