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有人可以告訴我為什么Timer試圖將int轉(zhuǎn)換為String.這是一直存在的錯誤.

CurrentTimePrinter.java:48: error: incompatible types: int cannot be
converted to String
time = new Timer(1000,listener);

CurrentTimePrinter.java:49: error: cannot find symbol
time.start();

import javax.swing.*;import java.awt.*;import java.io.*;import java.util.Date;import java.util.Timer;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.Color;import java.awt.Font;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JTextField;import java.awt.BorderLayout;public class CurrentTimePrinter extends JFrame {   private JButton Exitbutton;   private JTextField textField;   private static final int FIELD_WIDTH = 10;   private static final int FRAME_WIDTH = 600;   private static final int FRAME_HEIGHT = 400;   private ActionListener listener;   public Timer time;   public CurrentTimePrinter()   {      //listener = new CtpListener();      createComponents();      setSize(FRAME_WIDTH, FRAME_HEIGHT);   }   public void createComponents()   {      Color orange = new Color(255,165,0);      Font font = new Font("Times New Roman", Font.BOLD, 14);            textField = new JTextField(FIELD_WIDTH);      Exitbutton = new JButton("EXIT");      class CtpListener implements ActionListener      {            public void actionPerformed(ActionEvent event)         {            textField.setText(""   new Date());            Date now = new Date();            System.out.println(now);         }      }       ActionListener listener = new CtpListener();      time = new Timer(1000,listener);      time.start();      Exitbutton.setFont(font);      Exitbutton.setForeground(Color.BLACK);      ExitButtonListener exitListener = new ExitButtonListener();      Exitbutton.addActionListener(exitListener);      JPanel panel1 = new JPanel();      time = new Timer(1000, listener);       time.start();      JPanel panel2 = new JPanel();      panel1.setBackground(orange);      panel1.add(Exitbutton);      panel2.add(textField);      JPanel contentPane = new JPanel(new BorderLayout());      contentPane.add(panel1, BorderLayout.SOUTH);      contentPane.add(panel2, BorderLayout.CENTER);      setContentPane(contentPane);   }     class ExitButtonListener implements ActionListener   {      public void actionPerformed(ActionEvent event)      {         System.exit(0);      }   }               public static void main(String[] args)   {           JFrame frame = new CurrentTimePrinter();      frame.setTitle("Current Time");      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      frame.setLocationRelativeTo(null);      frame.setVisible(true);   }}

解決方法:

您正在使用java.util.Timer.你想要javax.swing.Timer.

在導入中替換它,它應該是：

 import javax.swing.Timer;