Java compiler forces us to catch and handle the checked exceptions when we use a method that throws it. These checked exceptions are anticipated, for example,FileNotFoundExceptioncan be thrown when we try to read a file from the filesystem. In a normal Java program, we can usetry-catch-fi...
In this tutorial, we’ll explore Java’sInterruptedException. First, we’ll quickly go through the life cycle of a thread with an illustration. Next, we’ll see how working in multithreaded applications can potentially cause anInterruptedException. Finally, we will see how to handle this exceptio...
In JDBC, we may get exceptions when we execute or create the query. Exceptions that occur due to the Database or Driver come under SQL Exception. Using Exception handling, we can handle the SQL Exception like we handle the normal exception. SQLException is available in the java.sql package....
Theunreported exception IOException; must be caught or declared to be thrownerror in Java typically occurs when there is code that may throw anIOException, but the exception is not properly handled. Here are various causes of this error along with corresponding solutions: ...
Exceptioninthread"main"java.lang.ClassCastException: class com.howtodoinjava.core.streams.sort.Person cannot be cast to class java.lang.Comparable(com.howtodoinjava.core.streams.sort.Person isinunnamed module of loader'app';java.lang.Comparable isinmodule java.base of loader'bootstrap')at java....
Handle NoSuchElementException: No Line Found Error in Java In Java programming, dealing with exceptions is an essential skill for writing robust and reliable code. One common exception that developers often encounter is the NoSuchElementException, particularly when working with input streams and...
The word “handle” was used many times. What does it mean? An exceptions is considered to be handled when it gets “caught” in our familiar catch clause. When an exception is thrown, first it will search for exception handling in the code from where it happens, if none is found it ...
java streams – npi ea (cat=java streams) since its introduction in java 8, the stream api has become a staple of java development. the basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use. but these can also be overused and fall into ...
@Slf4j @SpringBootTest public class Chapter78ApplicationTests { @Autowired private AsyncTasks asyncTasks; @Test public void test2() throws Exception { // 线程池配置:core-2,max-2,queue=2,同时有5个任务,出现下面异常: // org.springframework.core.task.TaskRejectedException: Executor [java.util....
However, it’s not without its limitations. TheCollections.sort()method sorts in ascending order by default, and it can’t handle null values. If you try to sort a list with null values, it will throw aNullPointerException. Moreover, it may not work as expected with custom objects, unle...