Revert "Update HelloWorld.java"

This reverts commit 9ed4512684d09f02b1b231202bab089d0a71e249.
Revert "Revert "Update HelloWorld.java""

This reverts commit 4b99f4f128da543751aa24db01de34e3dcfefc02.
Revert "Revert "Revert "Update HelloWorld.java"""

This reverts commit e5b3ed819fbb8fdea80d3a8f5ad6b188064efe42.
Revert "Revert "Revert "Revert "Update HelloWorld.java""""

This reverts commit eac4ee8f9ca690e1bc3c246bc963bd7a0046087f.