added HelloWorld Example and Solution!

Author: armeetj

.gitignore

@@ -3,4 +3,7 @@
 
 # ignore files
 c4t-java.iml
-.DS_Store
+.DS_Store
+
+# ignore prettier files
+.prettierrc.json

src/com/codefortomorrow/beginner/chapter1/practice/HelloWorld.java

@@ -0,0 +1,19 @@
+package com.codefortomorrow.beginner.chapter1.practice;
+
+/**
+ * @author ArmeetJatyani
+ * March 2021
+ * 
+ * Welcome to Java! 
+ * This may be your first ever java program!
+ * We'll begin your journey with the infamous Hello World program!
+ */
+
+ // a class is an "object" where we will place all our code inside
+ public class HelloWorld{
+    // the main method (below) is the first thing that runs when your program is run
+    public static void main(String[] args) {
+        // write code here (replace the "" with "Hello World!")
+        System.out.println("");
+    }
+ }

src/com/codefortomorrow/beginner/chapter1/solutions/HelloWorld.java

@@ -0,0 +1,19 @@
+package com.codefortomorrow.beginner.chapter1.practice;
+
+/**
+ * @author ArmeetJatyani
+ * March 2021
+ * 
+ * Welcome to Java! 
+ * This may be your first ever java program!
+ * We'll begin your journey with the infamous Hello World program!
+ */
+
+ // a class is an "object" where we will place all our code inside
+ public class HelloWorld{
+    // the main method (below) is the first thing that runs when your program is run
+    public static void main(String[] args) {
+        // write code here (replace the "" with "Hello World!")
+        System.out.println("Hello World!");
+    }
+ }