java: add «1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence»

URL:	https://leetcode.com/problems/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence/
Signed-off-by: Matej Focko <me@mfocko.xyz>

java/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.java

@@ -0,0 +1,12 @@
+class Solution {
+  public int isPrefixOfWord(String sentence, String searchWord) {
+    var words = sentence.split(" ");
+    for (int i = 0; i < words.length; ++i) {
+      if (words[i].startsWith(searchWord)) {
+        return 1 + i;
+      }
+    }
+
+    return -1;
+  }
+}