It doesn't take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...

Internal error: java.lang.NullPointerException: Cannot invoke "java.util.concurrent.CompletableFuture.thenRun(java.lang.Runnable)" because "this.initializeFuture" is null ...

While browsing the Quarkus sources with the plugin enabled, I get this error: Internal error: java.lang.NullPointerException: Cannot invoke "org.eclipse.lsp4j.ServerCapabilities.getCodeActionProvid ...

It was announced approximately 18 months ago that JDK 7 would include a new java.util.Objects class that would "hold commonly-written utility methods." As part of this announcement , Joe Darcy ...