Programming Issues

Issues

java.lang.Exception No runnable methods

The java.lang.Exception No runnable methods exception occurs when Junit detects no runnable test methods. In spring boot, the exception occurs where no test runnable methods are configured in junit test classes. The junit framework does not find a test method with the @Test annotation in the test class. The exception

No qualifying bean of type ‘org.springframework.test.web.servlet.MockMvc’ available

In spring boot integration test, MockMvc throws NoSuchBeanDefinitionException on auto wire. MockMvc failed with an @autowired annotation in the spring boot test environment. In this article, we discuss the explanation for NoSuchBeanDefinitionExceptio: org.springframework.test.web.servlet.MockMvc, and the solution to fix this exception. Root Cause MockMvc is used to mock the mvc request

No qualifying bean of type org.springframework.web.context.WebApplicationContext available

WebApplicationContext creates a web environment to run a spring boot test class. If the WebApplicationContext bean is not available or is not created within the spring boot framework and the spring boot bean attempts to auto-wire this WebApplicationContext bean, this exception will be thrown by spring boot. Root Cause The

java.lang.IllegalArgumentException WebApplicationContext is required SpringRunner.class

In this post, we will explore the issue of loading the WebApplicationContext. The common issue is not loading the WebApplicationContext into the spring boot test environment. WebApplicationContext provides a web-based environment to run test cases. The WebApplicationContext is not required to run a spring boot console test. The web-based spring

Popup Message – No tests found with test runner JUnit5

The unusual Popup Message “No tests found with test runner ‘JUnit5’ ” is often seen when running test classes in spring boot application In eclipse, when you run the JUnit test case in your spring boot application, some time you’ll encounter a problem that eclipse can’t find any tests. In

java.lang.IllegalStateException ThreadPoolTaskScheduler not initialized

ThreadPoolTaskScheduler is used to create a thread pool that manages scheduler task. These threads will run periodically based on the time interval that has been configured. Configured parameters must be initialized before the schedulers are used. Root Cause The custom thread pool is created in the spring boot application. Schedulers

java.lang.IllegalArgumentException: ‘poolSize’ must be 1 or higher

By Default, the Spring boot scheduler runs using default thread pool of size one. ThreadPoolTaskScheduler allows to create a custom thread pool with any pool size. The size of the pool must be set to 1 or higher. The size of the pool must be set higher if you are

java.lang.IllegalStateException: Encountered invalid @Scheduled method ‘task’: Invalid time zone specification

The exception “java.lang.IllegalStateException: Encountered invalid @Scheduled method ‘task’: Invalid time zone specification”  is thrown in the spring boot scheduler on invalid time zone configured. Schedulers are the tasks that run at a certain interval on a regular basis. Spring boot offers good support for spring boot schedulers. It is possible to configure these schedulers as cron job. By default, cron time

Invalid initialDelayString cannot parse into long

Spring boot provides good support for the creation of spring boot schedulers. Schedulers are the tasks that run periodically at a specific interval. As soon as the application starts, these schedulers will run. Spring boot allows these schedulers to be started after a certain delay period. This delay is configured

Invalid fixedDelayString cannot parse into long

The scheduler interval is configured in milliseconds in spring boot application. The duration is a long value defined in @Scheduler configuration in fixedDelay variables. You can configure these values as a string parameter. If any error occurred when the string was converted to long, this exception will be thrown from

Unexpected error occurred in scheduled task

Schedulers in spring boot framework runs the configured the task method periodically. If any error occurred in the task method, the unexpected error exception is thrown by the spring boot. This is due to the logical issue in the code. Exception 2019-10-10 12:14:00.007 ERROR 49298 --- [ scheduling-1] o.s.s.s.TaskUtils$LoggingErrorHandler :

Encountered invalid @Scheduled method

The spring boot Encountered invalid @Scheduled method error occurs if you provide an invalid input string in the annotation @Scheduled. The scheduler configuration should be added in the annotation @Scheduled. If the invalid input string is configured in the @Scheduled annotation, the exception java.lang.IllegalStateException: Encountered invalid @Scheduled method : For

Invalid fixedRateString cannot parse into long

The scheduler interval is configured in milliseconds in spring boot application. The duration is a long value defined in @Scheduler configuration in fixedRate and fixedDelay variables. You can configure these values as a string parameter. If any error occurred when the string was converted to long, this exception will be

o.s.boot.SpringApplication: Application run failed, java.lang.IllegalArgumentException: null – @Scheduled Method

The spring boot @Scheduled method is not working and throws Application run failed, java.lang.IllegalArgumentException: null exception if the scheduler is configured with an invalid value in the @Scheduled annotation. The @Scheduled annotation is configured for two arguments, fixedRate and fixedDelay. If the argument is set to an invalid value, the

Encountered invalid @Scheduled method ‘task’: Exactly one of the ‘cron’, ‘fixedDelay(String)’, or ‘fixedRate(String)’ attributes is required

The Exactly one of the ‘cron’, ‘fixedDelay(String)’, or ‘fixedRate(String)’ attributes is required exception occurs when an invalid value is provided in cron or fixedDelay(String) or fixedRate(String) in the @Scheduled annotation. The @Scheduled annotation requires exactly one of the attribute cron or fixedDelay(String) or fixedRate(String). The exception Encountered invalid @Scheduled method