Unable to call the Browser and Run Code

Hi ,
I am facing an errror while running a code

Code---
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;


public class test1 {
@Test
public void testexcel(){
WebDriver driver=new FirefoxDriver();

}
}

Error on Console

----org.openqa.selenium.WebDriverException: org.openqa.selenium.WebDriverException: Unable to bind to locking port 7054 within 45000 ms
System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.8.0_60'
Driver info: driver.version: firefox
System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.8.0_60'
Driver info: driver.version: firefox
at org.openqa.selenium.firefox.internal.ExtensionConnectionFactory.connectTo(ExtensionConnectionFactory.java:46)
at org.openqa.selenium.firefox.FirefoxDriver.connectTo(FirefoxDriver.java:139)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:129)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:109)
at WeBuy.testproduct(WeBuy.java:15)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:816)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1124)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:774)
at org.testng.TestRunner.run(TestRunner.java:624)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:359)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:354)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:312)
at org.testng.SuiteRunner.run(SuiteRunner.java:261)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1191)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1116)
at org.testng.TestNG.run(TestNG.java:1024)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:112)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:205)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:176)
Caused by: org.openqa.selenium.WebDriverException: Unable to bind to locking port 7054 within 45000 ms
System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.8.0_60'
Driver info: driver.version: firefox
at org.openqa.selenium.firefox.internal.SocketLock.lock(SocketLock.java:72)
at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.<init>(NewProfileExtensionConnection.java:45)
at org.openqa.selenium.firefox.internal.ExtensionConnectionFactory.connectTo(ExtensionConnectionFactory.java:44)
... 28 more