diff --git a/pages/common/java.md b/pages/common/java.md
index 08e962585..510564b15 100644
--- a/pages/common/java.md
+++ b/pages/common/java.md
@@ -13,3 +13,6 @@
 - Display JDK, JRE and HotSpot versions:
 
 `java -version`
+
+- Custom input and output files. Preferably .txt files
+`java {{classname}} <{{inputfile}}> outputfile`