java - Jython jlist 文本未显示在 JFrame 中

Question

我正在编写一个小型股票报价应用程序，当我编译代码时，Jlist 中将占用文本空间，但不会出现任何文本。

def loadStockDisplay(self):
    self.display = JPanel()
    self.display.setLayout(BorderLayout())
    self.display.setBackground(Color.decode("#0A0A33"))
    self.display.setBorder(BorderFactory.createMatteBorder(0,3,0,0,Color.decode("#8080E6")))
    self.label = JLabel("Stocks")
    self.label.setForeground(Color.decode("#FCFCFC"))
    self.label.setFont(self.font)
    self.display.add(self.label,BorderLayout.NORTH)
    self.stocks = DefaultListModel();
    self.items = JList(self.stocks)
    self.items.setBackground(Color.decode("#0A0A33"))
    self.items.setForeground(Color.decode("#FCFCFC"))
    self.items.setFont(self.font)
    self.items.setSelectionBackground(Color.decode("#0A0A33"))
    self.items.setSelectionForeground(Color.decode("#FCFCFC"))
    self.display.add(self.items, BorderLayout.CENTER)
    self.frame.add(self.display,BorderLayout.EAST)
    self.updateStocks()

def updateStocks(self):
    companys = ["MSFT","SNDK","GOOGL","NOK","EMC","HPQ","IBM","EBAY","AAPL","AMZN"]
    tempList = []
    for company in companys:
        Quote = web()
        tempList.append(company + " " + str(Quote.getQuote(company)))
    self.stocks.clear()
    for item in tempList:
        self.stocks.addElement(item)

Answer 1

也许代码中存在问题，但问题中尚不可用？您能分享一下类和主要方法吗(如果有的话)？从网络获取报价也可能存在问题。

如果我添加一些代码来使您的程序运行，该列表将包含每个公司的项目(带有虚拟报价):

from java.awt import BorderLayout, Color
from javax.swing import BorderFactory, DefaultListModel, JFrame, JLabel, JList, JPanel

class StocksTest:
    def loadStockDisplay(self):
        self.frame = JFrame('Stocks', defaultCloseOperation=JFrame.EXIT_ON_CLOSE, size=(300, 300), locationRelativeTo=None)
        self.display = JPanel()
        self.display.setLayout(BorderLayout())
        self.display.setBackground(Color.decode("#0A0A33"))
        self.display.setBorder(BorderFactory.createMatteBorder(0,3,0,0,Color.decode("#8080E6")))
        self.label = JLabel("Stocks")
        self.label.setForeground(Color.decode("#FCFCFC"))
        self.label.setFont(self.frame.font)
        self.display.add(self.label,BorderLayout.NORTH)
        self.stocks = DefaultListModel();
        self.items = JList(self.stocks)
        self.items.setBackground(Color.decode("#0A0A33"))
        self.items.setForeground(Color.decode("#FCFCFC"))
        self.items.setFont(self.frame.font)
        self.items.setSelectionBackground(Color.decode("#0A0A33"))
        self.items.setSelectionForeground(Color.decode("#FCFCFC"))
        self.display.add(self.items, BorderLayout.CENTER)
        self.frame.add(self.display,BorderLayout.EAST)
        self.frame.setVisible(True)
        self.updateStocks()

    def updateStocks(self):
        companys = ["MSFT","SNDK","GOOGL","NOK","EMC","HPQ","IBM","EBAY","AAPL","AMZN"]
        tempList = []
        for company in companys:
            #Quote = web()
            #companyQuote = Quote.getQuote(company)
            companyQuote = len(str(company)) * 314.15
            tempList.append(company + " " + str(companyQuote))
        self.stocks.clear()
        for item in tempList:
            self.stocks.addElement(item)


def main():
    StocksTest().loadStockDisplay()

if __name__ == '__main__':
    main()