I am executing my JUnit code. I want my method to be executed once. I am using @BeforeClass. I am getting below error.
16:44:52 java.lang.Exception: Method preparation() should be static
16:44:52 at org.junit.runners.model.FrameworkMethod.validatePublicVoid(FrameworkMethod.java:93)
16:44:52 at org.junit.runners.model.FrameworkMethod.validatePublicVoidNoArg(FrameworkMethod.java:74)
16:44:52 at org.junit.runners.ParentRunner.validatePublicVoidNoArgMethods(ParentRunner.java:155)
16:44:52 at org.junit.runners.ParentRunner.collectInitializationErrors(ParentRunner.java:125)
16:44:52 at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:124)
16:44:52 at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
16:44:52 at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
16:44:52 at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
16:44:52 at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:10)
16:44:52 at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
16:44:52 at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
16:44:52 at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
16:44:52 at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
16:44:52 at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:250)
16:44:52 at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
16:44:52 at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
16:44:52 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
16:44:52 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
16:44:52 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
16:44:52 at java.lang.reflect.Method.invoke(Method.java:498)
16:44:52 at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
16:44:52 at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
16:44:52 at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
16:44:52 at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
16:44:52 at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)