Added initial java samples.

2 files changed, 22 insertions, 0 deletions

diff --git a/java/04-factorial/.gitignore b/java/04-factorial/.gitignore
new file mode 100644
index 0000000..6b468b6
--- /dev/null
+++ b/java/04-factorial/.gitignore
@@ -0,0 +1 @@
+*.class
diff --git a/java/04-factorial/Factorial.java b/java/04-factorial/Factorial.java
new file mode 100644
index 0000000..0b2e650
--- /dev/null
+++ b/java/04-factorial/Factorial.java
@@ -0,0 +1,21 @@
+public class Factorial {
+    public static void main(String[] args) {
+        int x = factorial(5);
+
+        System.out.println(x);
+
+        int y = factorial(10);
+
+        System.out.println(y);
+
+        System.out.println(factorial(3));
+    }
+
+    public static int factorial(int x) {
+        if (x == 0) {
+            return 1;
+        }
+
+        return x * factorial(x - 1);
+    }
+}