Revert "Add bla4.java"

This reverts commit ded1d359236da9ac28af0ceceb8f0bd9cd391fa4.
Revert "Revert "Add bla4.java""

This reverts commit e9381fa50833367887a5c70bf93b70ce764e3bb4.
Revert delete bla5.java

This reverts commit ed3eaeb3b0674a4f28f95e9dada7b5bc7b95a4ff, reversing
changes made to ded1d359236da9ac28af0ceceb8f0bd9cd391fa4.