单身人士进入无限循环

时间：2015-01-16 20:49:16

标签： java singleton

我使用单例模式来构建一个类，但它确实接收了另一个单例作为参数，它不起作用，这真的可能吗？

这是整个项目：https://github.com/raphaelbgr/SwingSocketClient/tree/master/src 

package clientmain;

import gui.janelas.JanelaMain;

public class ClientMain {

    public static int port              = 0;

    public static Thread receiver           = null;

    public static String ip                 = null;     
    public static String your_name      = null;     

    public static void main(String[] args) {    
        JanelaMain jam = JanelaMain.getInstance(); //JanelaMain extends JFrame
        jam.setLocationByPlatform(false);
    }

这是它的单身人士。

//SINGLETON PATTERN BLOCK
private static JanelaMain jam;
public static JanelaMain getInstance() {
    if (JanelaMain.jam == null) {
        jam = new JanelaMain(JanelaSelectServer.getInstance()); //Another one passed by parameter
    }
    return jam;
}

另一个类Singleton块：

//SINGLETON PATTERN BLOCK
private JanelaSelectServer() {} //JanelaSelectServer extends another JFrame
private static JanelaSelectServer jsv;
public static JanelaSelectServer getInstance() {
    if (jsv == null) {
        jsv = new JanelaSelectServer();
    } 
    return jsv;
}

狗屎发生（A Loop）

s.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)
at gui.janelas.JanelaMain.getInstance(JanelaMain.java:144)
at gui.updatelogs.ConnectionLog.<init>(ConnectionLog.java:13)
at gui.updatelogs.ConnectionLog.getInstance(ConnectionLog.java:34)
at gui.janelas.JanelaMain.<init>(JanelaMain.java:37)

感谢。

2 个答案:

答案 0 :(得分：3)

你的代码看起来有点奇怪，为什么要给另一个单身人士？您可以在需要的地方使用单例类，而无需将其提供给另一个类。

答案 1 :(得分：2)

问题不是关于那些类，而是关于ConnectionLog类。您正尝试在JanelaMain中创建实例，ConnectionLog尝试创建JanelaMain的实例。

@SuppressWarnings("serial")
public class JanelaMain extends JFrame {

private FlowLayout layout                           = new FlowLayout();
private JTextField jtxt_send                        = null;

//CUSTOM SWING COMPONENTS
private ConnectionLog cn_log                = ConnectionLog.getInstance();
private TextLog msg_list                    = TextLog.getInstance();


@SuppressWarnings("serial")
public class ConnectionLog extends JTextField {

private JanelaMain jam = JanelaMain.getInstance();
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