Revert "Colocado HelloWorld.java"

This reverts commit 7de1e4e66cefa4058b737a969fb76295c704a148.
Revert "Revert "Colocado HelloWorld.java""

This reverts commit e47e30b2ef1c81049320e856a99a5e96473d11c7.
Revert "Revert "Revert "Colocado HelloWorld.java"""

This reverts commit 17193f2963f0a44a26b91592a313d13555f53058.