Compile time errors in Java are a source of great frustration to developers, especially as they try to learn the language. Compile time error messages are notoriously unclear, and troubleshooting such errors can be overwhelming. To help alleviate the frustrations that compile time error often evoke,...
Compile Time Constants in Java! What’s So special About Them? Now that we know what compile time constants are, we’ll now see why are they special. As the name implies, compile time constants get special treatment by the compiler. The first example of the special treatment is that they...
For example, below there's no public constructor for DatabaseAccess, which results in a compile-time error:class DatabaseAccess private () class SecurityFilter() class UserFinder(databaseAccess: DatabaseAccess, securityFilter: SecurityFilter) class UserStatusReader(userFinder: UserFinder) autowire[...
When enabled, the compiler will ignore generics-related type problems that could not have been avoided by the programmer, because a referenced API already contains raw types. As an example, a type may be forced to use raw types in its method signatures and return types because the methods it...
ctrl-~- Insert the current date and time. esc- Redraw everything and clear the last search. Build and format Pressctrl-spaceto build or export the current file. Pressctrl-wto format the current file, in an opinionated way. If the current file is empty, a "Hello, World!" template will...
--- [ERROR] /home/test/IdeaProjects/testapp/src/main/java/org/example/servlet/HelloService.java:[3,17] package javax.jws does not exist [ERROR] /home/test/IdeaProjects/testapp/src/main/java/org/example/servlet/HelloService.java:[5,2] cannot find symbol symbol: class WebService Java...
Based on the first example I would have thought that "x-1" would be evaluated at runtime and consequently this code would cause a compile error. But no, all of a sudden the compiler isn't a complete doofus and can evaluate "x-1" So my question is how do you work out what will ...
useful, for example, when working with frameworks if you want to do metaclass changes before your code is executed by the framework. The general form of the magic package isgroovy.runtime.metaclass.[package].[class]MetaClass. In the example below the[package]isjava.langand the[class]isInteger...
Steven Thomas is having issues with: When I attempt to run the unit tests with junit I am getting a compile error. I have made no changes to the test class and it seems to be an iss...
3. Place the required extra libraries, ant-contrib.jar and junit.jar, in a separate directory—for example, "C:\connectorj-extralibs". > ant-contrib.jar and junit.jar and hibernate-core-4.2.12.Final.jar $ cp ant-contrib-1.0b3.jar mysql-connector-java-5.1.30/src/lib/ant-contrib.jar ...