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Java.rmi.connectexception: connection refused to host: 127.0.0.1; nested exception is:
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Java
Swing
 
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
//package myDesign;

//import Util.Source;
//import com.multicast.MulticastRx;
//import com.multicast.MulticastsRx;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.net.InetAddress;
import java.net.MalformedURLException;
import java.net.ServerSocket;
import java.rmi.Naming;
import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

/**
 * 
 * @author jp
 */
public class Router extends javax.swing.JFrame {

	int v;
	ServerSocket ss;
	InputStream is = null;
	ObjectInputStream ois;
	InetAddress ip;
	String getData;
	String getFName;
	String getTotalPackets, senderName, receiverIP, sizes, totalPackets;
	String getdiv;
	String name, size, packets;
	// Thread t = new Thread(new Connect());
	JScrollPane sp;
	JTable table;
	DefaultTableModel model;

	// Thread t;

	public Router() {
		initComponents();
setTitle("Router");
		init();
		this.getContentPane().setBackground(Color.CYAN);
		// Thread t = new Thread(new Connect());

		// String data[][] = {{"", "", "", "", "", "", "", ""}};
		String data[][] = {};
		String col[] = { "Q-No", "File", "Sender", "Receiver", "Size",
				"Total Packets", "Status" };
		model = new DefaultTableModel(data, col);
		table = new JTable(model);
		// model.insertRow(0, new Object[]{"Ranjan", "50"});
		// model.insertRow(3, new Object[]{"Amar", "600"});
		// model.insertRow(table.getRowCount(), new Object[]{"", "", "", "", "",
		// "", "", ""});
		table.setBounds(330, 50, 450, 150);
		sp = new JScrollPane(table);
		sp.setBounds(330, 50, 650, 190);
		add(sp);

		// t.start();

	}

	private void init() {
		new MulticastRx(this);
		new MulticastsRx(this);
	}

	public class Connect implements Runnable {

		public void run() {

			try {

				String url = "rmi://127.0.0.1/router";

				srvint in = (srvint) Naming.lookup(url);
				System.out.println("Receiving");
				ArrayList<String> array = new ArrayList<String>();
				array = in.getArray();
				
				getData = array.get(0);
				getFName = array.get(1).trim();
				senderName = array.get(2).trim();
				receiverIP = array.get(3).trim();
				sizes = array.get(4).trim();
				totalPackets = array.get(5).trim();

				int uu = Integer.parseInt(totalPackets);

				for (int k = 1; k <= uu; k++) {
					 Thread.sleep(300);
					model.insertRow(table.getRowCount(),
							new Object[] { table.getRowCount(), getFName,
									senderName, receiverIP, sizes,
									totalPackets, "packet " + k });
									
									jTextArea3.append("Packet " + k + " Received"+"\n");

				}
				 Thread.sleep(300);
				model.insertRow(table.getRowCount(),
						new Object[] { table.getRowCount(), getFName,
								senderName, receiverIP, sizes, totalPackets,
								"Completed" });

				// while (table.getRowCount() > 0) {
				// model.removeRow(0);
				// }
				JOptionPane
						.showMessageDialog(null, "File receive Completed..!");
			} // GEN-LAST:event_jButton1ActionPerformed
			catch (InterruptedException ex) {
				Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
						null, ex);
			}catch (NotBoundException ex) {
				Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
						null, ex);
			} catch (MalformedURLException ex) {
				Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
						null, ex);
			} catch (RemoteException ex) {
				Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
						null, ex);
			}

		}
	}

	@SuppressWarnings("unchecked")
	private void initComponents() {

		jLabel1 = new javax.swing.JLabel();
		jLabel2 = new javax.swing.JLabel();
		jScrollPane1 = new javax.swing.JScrollPane();
		jTextArea1 = new javax.swing.JTextArea();
		jScrollPane2 = new javax.swing.JScrollPane();
		jTextArea2 = new javax.swing.JTextArea();
		jButton1 = new javax.swing.JButton();
		jLabel3 = new javax.swing.JLabel();
		jScrollPane3 = new javax.swing.JScrollPane();
		jTextArea3 = new javax.swing.JTextArea();
		jButton2 = new javax.swing.JButton();
		jButton3 = new javax.swing.JButton();
		jButton4 = new javax.swing.JButton();
		jLabel4 = new javax.swing.JLabel();
		jButton5 = new javax.swing.JButton();

		setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
		setMinimumSize(new java.awt.Dimension(1000, 650));
		getContentPane().setLayout(null);

		jLabel1.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jLabel1.setText("Receive Nodes");
		getContentPane().add(jLabel1);
		jLabel1.setBounds(20, 244, 140, 20);

		jLabel2.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jLabel2.setText("Packets In Queue");
		getContentPane().add(jLabel2);
		jLabel2.setBounds(300, 254, 160, 20);

		jTextArea1.setColumns(20);
		jTextArea1.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jTextArea1.setRows(5);
		jScrollPane1.setViewportView(jTextArea1);

		getContentPane().add(jScrollPane1);
		jScrollPane1.setBounds(10, 80, 160, 150);

		jTextArea2.setColumns(20);
		jTextArea2.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jTextArea2.setRows(5);
		jScrollPane2.setViewportView(jTextArea2);

		getContentPane().add(jScrollPane2);
		jScrollPane2.setBounds(10, 270, 160, 150);

		jButton1.setText("Receive");
		jButton1.addActionListener(new java.awt.event.ActionListener() {
			public void actionPerformed(java.awt.event.ActionEvent evt) {
				jButton1ActionPerformed(evt);
			}
		});
		jButton1.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		//jButton1.setText("BottleNeck Queue");
		
		getContentPane().add(jButton1);
		jButton1.setBounds(60, 440, 110, 30);

		jLabel3.setFont(new java.awt.Font("Algerian", 0, 24)); // NOI18N
		jLabel3.setText("Using Fuzzy Logic Control To Provide Intelligent Traffic Management Service");
		getContentPane().add(jLabel3);
		jLabel3.setBounds(10, 10, 990, 30);

		jTextArea3.setColumns(20);
		jTextArea3.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jTextArea3.setRows(5);
		jScrollPane3.setViewportView(jTextArea3);

		getContentPane().add(jScrollPane3);
		jScrollPane3.setBounds(210, 290, 530, 240);

		jButton2.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jButton2.setText("Memory Used");
		getContentPane().add(jButton2);
		jButton2.setBounds(760, 430, 190, 30);
		jButton2.addActionListener(new Actions());

		jButton3.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jButton3.setText("Router Traffic");
		getContentPane().add(jButton3);
		jButton3.setBounds(760, 310, 190, 30);
		jButton3.addActionListener(new Actions());

		jButton4.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jButton4.setText("BottleNeck Queue");
		getContentPane().add(jButton4);
		jButton4.setBounds(760, 370, 190, 30);
		jButton4.addActionListener(new Actions());

		jLabel4.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N
		jLabel4.setText("Source Nodes");
		getContentPane().add(jLabel4);
		jLabel4.setBounds(20, 54, 120, 20);

		jButton5.setText("Transfer");
			jButton5.setFont(new java.awt.Font("Agency FB", 0, 24)); // NOI18N

		getContentPane().add(jButton5);
		jButton5.setBounds(60, 490, 113, 30);
		jButton5.addActionListener(new Actions());
		pack();
	}// </editor-fold>//GEN-END:initComponents

	public class Actions implements ActionListener {
		public void actionPerformed(ActionEvent e) {
		
		if(e.getSource()==jButton2){
		
		new MemoryUsed().setVisible(true);
		}
		if(e.getSource()==jButton3){
		
		new RouterTraffic().setVisible(true);
		}
		if(e.getSource()==jButton4){
		
		new BottleNeck().setVisible(true);
		}
		
			if (e.getSource() == jButton5) {

				try {
					ArrayList<String> array1 = new ArrayList<String>();

					array1.add(0, getData);
					array1.add(1, getFName);
					array1.add(2, senderName);
					array1.add(3, receiverIP);
					array1.add(4, sizes);
					array1.add(5, totalPackets);

					System.out.println(getData);
					System.out.println(getFName);
					System.out.println(senderName);
					System.out.println(receiverIP);
					System.out.println(sizes);
					System.out.println(totalPackets);

					JOptionPane.showMessageDialog(null, "Transfering");
					String url1 = "rmi://127.0.0.1/" + receiverIP;
					srvint in1 = (srvint) Naming.lookup(url1);
					System.out.println("hello ok");
					// System.out.println(in1.getArray());
					in1.setArray1(array1);
					JOptionPane
							.showMessageDialog(null, "Transfering completed");
				} catch (NotBoundException ex) {
					Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
							null, ex);
				} catch (MalformedURLException ex) {
					Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
							null, ex);
				} catch (RemoteException ex) {
					Logger.getLogger(Router.class.getName()).log(Level.SEVERE,
							null, ex);
				}

			}
		}
	}

	private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {

		Thread t = new Thread(new Connect());
		t.start();

	}// GEN-LAST:event_jButton1ActionPerformed

	/**
	 * @param args
	 *            the command line arguments
	 */
	public static void main(String args[]) {
		/* Set the Nimbus look and feel */
		// <editor-fold defaultstate="collapsed"
		// desc=" Look and feel setting code (optional) ">
		/*
		 * If Nimbus (introduced in Java SE 6) is not available, stay with the
		 * default look and feel. For details see
		 * http://download.oracle.com/javase
		 * /tutorial/uiswing/lookandfeel/plaf.html
		 */
		try {
			for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager
					.getInstalledLookAndFeels()) {
				if ("Nimbus".equals(info.getName())) {
					javax.swing.UIManager.setLookAndFeel(info.getClassName());
					break;
				}
			}
		} catch (ClassNotFoundException ex) {
			java.util.logging.Logger.getLogger(Router.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		} catch (InstantiationException ex) {
			java.util.logging.Logger.getLogger(Router.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		} catch (IllegalAccessException ex) {
			java.util.logging.Logger.getLogger(Router.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		} catch (javax.swing.UnsupportedLookAndFeelException ex) {
			java.util.logging.Logger.getLogger(Router.class.getName()).log(
					java.util.logging.Level.SEVERE, null, ex);
		}
		// </editor-fold>

		/* Create and display the form */
		java.awt.EventQueue.invokeLater(new Runnable() {
			public void run() {
				new Router().setVisible(true);
				try {
					srvimp rob = new srvimp();
					Naming.rebind("router", rob);
				} catch (RemoteException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (MalformedURLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}
		});
	}

	// Variables declaration - do not modify//GEN-BEGIN:variables
	private javax.swing.JButton jButton1;
	private javax.swing.JButton jButton2;
	private javax.swing.JButton jButton3;
	private javax.swing.JButton jButton4;
	private javax.swing.JButton jButton5;
	private javax.swing.JLabel jLabel1;
	private javax.swing.JLabel jLabel2;
	private javax.swing.JLabel jLabel3;
	private javax.swing.JLabel jLabel4;
	private javax.swing.JScrollPane jScrollPane1;
	private javax.swing.JScrollPane jScrollPane2;
	private javax.swing.JScrollPane jScrollPane3;
	public javax.swing.JTextArea jTextArea1;
	public javax.swing.JTextArea jTextArea2;
	public javax.swing.JTextArea jTextArea3;
	// End of variables declaration//GEN-END:variables
}


What I have tried:

I write the code of IP address of router is
String url = "rmi://127.0.0.1/router";


But which shows error is

java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 

java.net.ConnectException: Connection refused: connect
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