P1-P5: init

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

P3.java

@@ -0,0 +1,14 @@
+class P3 {
+  public static void main(String[] _args) {
+      int a = 5, b = -5, c = 55, mx;
+
+      if (a > b && a > c)
+          mx = a;
+      else if ( b > a && b > c)
+          mx = b;
+      else
+          mx = c;
+
+      System.out.println("max(" + a + ", " + b + ", " + c + ") = " + mx);
+  }
+}