How can selenium close browser be used multiple times in TestNG?

I have two scripts trying to run using testng.

In 1st script launching browser at the end closing the browser.

In the second script again launching the browser and closing at the end.

But getting below error.

org.testng.TestNGException: 

Cannot instantiate class hotelsScripts.TS03_Hotelstours_StarGrade

    at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:40)

    at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:382)

    at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:295)

    at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:118)

    at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:183)

    at org.testng.internal.TestNGClassFinder.(TestNGClassFinder.java:128)

    at org.testng.TestRunner.init Methods(TestRunner.java:416)

    at org.testng.TestRunner.init(TestRunner.java:242)

    at org.testng.TestRunner.init(TestRunner.java:212)

    at org.testng.TestRunner.(TestRunner.java:166)

    at org.testng.remote.RemoteTestNG$1.newTestRunner(RemoteTestNG.java:143)

    at org.testng.remote.RemoteTestNG$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG.java:272)

    at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:587)

    at org.testng.SuiteRunner.init(SuiteRunner.java:161)

    at org.testng.SuiteRunner.(SuiteRunner.java:114)

    at org.testng.TestNG.createSuiteRunner(TestNG.java:1290)

    at org.testng.TestNG.createSuiteRunners(TestNG.java:1277)

    at org.testng.TestNG.runSuitesLocally(TestNG.java:1131)

    at org.testng.TestNG.run(TestNG.java:1048)

    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: java.lang.reflect.InvocationTargetException

    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

    at java.lang.reflect.Constructor.newInstance(Unknown Source)

    at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:29)

    ... 21 more

Caused by: org.openqa.selenium.WebDriverException: Unable to bind to locking port 7054 within 45000 ms

Build info: version: '2.53.1', revision: 'a36b8b1', time: '2016-06-30 17:32:46'

System info: host: 'ADMINIB-UKGT3G2', ip: '9.78.194.222', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.8.0_71'

Driver info: driver.version: FirefoxDriver

    at org.openqa.selenium.internal.SocketLock.lock(SocketLock.java:99)

    at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.start(NewProfileExtensionConnection.java:80)

    at org.openqa.selenium.firefox.FirefoxDriver.startClient(FirefoxDriver.java:271)

    at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:119)

    at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:218)

    at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:211)

    at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:207)

    at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:120)

    at hotelsScripts.TS01_Hotels_Amenties.(TS01_Hotels_Amenties.java:17)

    at hotelsScripts.TS03_Hotelstours_StarGrade.(TS03_Hotelstours_StarGrade.java:18)

    ... 26 more