What are the differences between PMD and FindBugs?

What are the differences between PMD and FindBugs?

java static-analysis findbugs pmd

java

Avoid printStackTrace(); use a logger call instead

java logging pmd printstacktrace

java

Checkstyle vs. PMD

java static-analysis findbugs checkstyle pmd

java

Unable to locate Source XRef to link to

java maven maven-3 pmd

java

Iterating over the content of a text file line by line - is there a best practice? (vs. PMD's AssignmentInOperand)

java while-loop pmd

java