equal « FindBugs « Java Testing Q&A

1. Findbugs warning: Equals method should not assume anything about the type of its argument    stackoverflow.com

When running FindBugs on my project, I got a few instances of the error described above. Namely, my overriding versions of equals cast the RHS object into the same type as the ...

2. FindBugs controversial description    stackoverflow.com

Am I understanding it wrong, or is the description wrong?

Equals checks for noncompatible operand (EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS) This equals method is checking to see if ...

3. Strange Findbugs error with equals    stackoverflow.com

I have equals this method, but Findbugs is reporting error, any idea?

@Override
public boolean equals(final Object obj) {
    return obj instanceof String && this.value != null  
 ...