java - Issue in the TESTNG program when I use "Priority" tag -

code: program using @test method priority tags.

package testng1; import static org.testng.assert.assertequals; import org.openqa.selenium.webdriver; import org.openqa.selenium.ie.internetexplorerdriver; import org.testng.assert; import org.testng.annotations.test;     @test      public class testng {     public static webdriver driver;     public void verifytitle()     {         system.setproperty("webdriver.ie.driver", "c:\\users\\rprem\\downloads\\iedriverserver_x64_3.4.0\\iedriverserver.exe");         webdriver driver = new internetexplorerdriver();         driver.navigate().to("https://google.com");         string title = driver.gettitle();         system.out.println(title);         assert.assertequals(title, "google");     }     @test (priority = 1)     public void verifytitle2()     {     driver.get("https://gmail.com");     string titlee = driver.gettitle();     assert.assertequals(titlee, "gmail - free storage , email google");     } } 

when run program i'm getting "java null pointer exception" issue. per logic methods executed in alphabetical order, when put priority run in given order. it's not happening that.

error message:

google passed: verifytitle failed: verifytitle2 java.lang.nullpointerexception     @ testng1.testng.verifytitle2(testng.java:22)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:498)     @ org.testng.internal.methodinvocationhelper.invokemethod(methodinvocationhelper.java:108)     @ org.testng.internal.invoker.invokemethod(invoker.java:661)     @ org.testng.internal.invoker.invoketestmethod(invoker.java:869)     @ org.testng.internal.invoker.invoketestmethods(invoker.java:1193)     @ org.testng.internal.testmethodworker.invoketestmethods(testmethodworker.java:126)     @ org.testng.internal.testmethodworker.run(testmethodworker.java:109)     @ org.testng.testrunner.privaterun(testrunner.java:744)     @ org.testng.testrunner.run(testrunner.java:602)     @ org.testng.suiterunner.runtest(suiterunner.java:380)     @ org.testng.suiterunner.runsequentially(suiterunner.java:375)     @ org.testng.suiterunner.privaterun(suiterunner.java:340)     @ org.testng.suiterunner.run(suiterunner.java:289)     @ org.testng.suiterunnerworker.runsuite(suiterunnerworker.java:52)     @ org.testng.suiterunnerworker.run(suiterunnerworker.java:86)     @ org.testng.testng.runsuitessequentially(testng.java:1301)     @ org.testng.testng.runsuiteslocally(testng.java:1226)     @ org.testng.testng.runsuites(testng.java:1144)     @ org.testng.testng.run(testng.java:1115)     @ org.testng.remote.abstractremotetestng.run(abstractremotetestng.java:132)     @ org.testng.remote.remotetestng.initandrun(remotetestng.java:230)     @ org.testng.remote.remotetestng.main(remotetestng.java:76)   ===============================================     default test     tests run: 2, failures: 1, skips: 0 ===============================================   =============================================== default suite total tests run: 2, failures: 1, skips: 0 =============================================== 

the problem lies in test code.

in method verifytitle() please change webdriver driver = new internetexplorerdriver(); driver = new internetexplorerdriver();

since assigning internetexplorerdriver instance local variable in method, shadowing class level webdriver , when verifytitle2() tries access it, triggers nullpointerexception

to fix problem, suggest extract out webdriver instantiation logic @beforeclass method.

@beforeclass()  public void beforeclass() {     system.setproperty("webdriver.ie.driver", "c:\\users\\rprem\\downloads\\iedriverserver_x64_3.4.0\\iedriverserver.exe");     driver = new internetexplorerdriver(); }