Added 15 solutions

Java/Strings/Java Substring/Solution.java

@@ -0,0 +1,15 @@
+import java.util.Scanner;
+
+public class Solution {
+
+    public static void main(String[] args) {
+        /* Read input */
+        Scanner scan = new Scanner(System.in);
+        String s  = scan.next();
+        int start = scan.nextInt();
+        int end   = scan.nextInt();
+        scan.close();
+        
+        System.out.println(s.substring(start, end));
+    }
+}