Jul 15, 2009 · Summary: Eclipse had compiled some or all of the classes, and its compiler is more tolerant of errors. Long explanation: The default behavior of Eclipse when compiling code with errors …

Learn how to fix 'java.lang.Error: Unresolved compilation problems' in Java, understand common causes, and explore effective debugging solutions.

Using IDE would detect this kind of error and prompt the developer with fixes. In this case, if we hover the mouse would show the correct method names for the class.

Dec 29, 2025 · Read our article that sheds light on Exception in Thread “main” java.lang.error: unresolved compilation problem: error and helps you resolve it.

In this video, I'll show you how to fix the error "Exception in Thread Main java.lang.error Unresolved Compilation Problem" in Java in VS Code (Visual Studio Code).

Feb 2, 2024 · One can observe and understand the issue clearly and provide a solution. The above issue can get resolved by creating the class if not present.

Apr 8, 2023 · It looks like you are missing constructors in your book class. Try adding a constructor with no arguments and another one with a String argument to fix the issue.

Feb 12, 2025 · The error you’re encountering, Duplicate local variable sc, is caused by declaring the same local variable sc more than once within the same scope in your Java program. To resolve this …

Runtime exceptions are ignored at the time of compilation. The display pattern of the runtime exception/unchecked exception is "Exception in thread main" i.e. whenever a runtime exception …

Dec 25, 2021 · As you already correctly answered the compiler swearing on the mismatch of declared types to call it. Accordingly, the compiler is trying to find in the class Pet method SAYS () without …