From 3ab032d0951c0cb11c73a96929ba2a9f23e85195 Mon Sep 17 00:00:00 2001
From: vaibhav007jain <72961247+vaibhav007jain@users.noreply.github.com>
Date: Mon, 8 Nov 2021 18:05:17 +0530
Subject: [PATCH] BAEL-5151 (#11385)

* commited initial code for hexagonal architecture

* Deleting to check in again

* Deleing to check in again

* Push first code for Hexagonal Architecture

* final code with UT for JSON to Java conversion

* removed hexagonal-architecture code from last commit

* BEL-5071 updated README

* BAEL-5071: Undo README changes and added a nested object in the JSON example.

* BAEL-5071: fixed whitespace/indentation in JsonToJavaClassConversion.java

* BAEL-5151: Added code for getting the first of a String

* BAEL-5151: Renamed Unit Test

* BAEL-5151: Moved the files from core-java-string-operations to core-java-string-operations-3

* BAEL-5151: Replaced tabs with white spaces.

Co-authored-by: Vaibhav Jain <vaibhav.ashokjain@vodafone.com>
---
 .../baeldung/firstword/FirstWordGetter.java   | 20 +++++++++++++
 .../firstword/FirstWordGetterUnitTest.java    | 30 +++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 core-java-modules/core-java-string-operations-3/src/main/java/com/baeldung/firstword/FirstWordGetter.java
 create mode 100644 core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/firstword/FirstWordGetterUnitTest.java

diff --git a/core-java-modules/core-java-string-operations-3/src/main/java/com/baeldung/firstword/FirstWordGetter.java b/core-java-modules/core-java-string-operations-3/src/main/java/com/baeldung/firstword/FirstWordGetter.java
new file mode 100644
index 0000000000..03c134752a
--- /dev/null
+++ b/core-java-modules/core-java-string-operations-3/src/main/java/com/baeldung/firstword/FirstWordGetter.java
@@ -0,0 +1,20 @@
+package com.baeldung.firstword;
+
+public class FirstWordGetter {
+
+    public static void main(String[] args) {
+        String input = "Roberto \"I wish you a bug-free day\"";
+        System.out.println("Using split: " + getFirstWordUsingSplit(input));
+        System.out.println("Using subString: " + getFirstWordUsingSubString(input));
+    }
+
+    public static String getFirstWordUsingSubString(String input) {
+        int index = input.contains(" ") ? input.indexOf(" ") : 0;
+        return input.substring(0, index);
+    }
+
+    public static String getFirstWordUsingSplit(String input) {
+        String[] tokens = input.split(" ", 2);
+        return tokens[0];
+    }
+}
diff --git a/core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/firstword/FirstWordGetterUnitTest.java b/core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/firstword/FirstWordGetterUnitTest.java
new file mode 100644
index 0000000000..bdaa25180e
--- /dev/null
+++ b/core-java-modules/core-java-string-operations-3/src/test/java/com/baeldung/firstword/FirstWordGetterUnitTest.java
@@ -0,0 +1,30 @@
+package com.baeldung.firstword;
+
+import static com.baeldung.firstword.FirstWordGetter.getFirstWordUsingSplit;
+import static com.baeldung.firstword.FirstWordGetter.getFirstWordUsingSubString;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class FirstWordGetterUnitTest {
+
+    @Test
+    public void givenString_whenSplit_thenFirstWordIsReturned() {
+        assertEquals("Roberto", getFirstWordUsingSplit("Roberto \"I wish you a bug-free day\""));
+    }
+
+    @Test
+    public void givenStringWithNoSpace_whenSplit_thenFirstWordIsReturned() {
+        assertEquals("StringWithNoSpace", getFirstWordUsingSplit("StringWithNoSpace"));
+    }
+
+    @Test
+    public void givenString_whenPassedToSubstring_thenFirstWordIsReturned() {
+        assertEquals("Roberto", getFirstWordUsingSubString("Roberto \"I wish you a bug-free day\""));
+    }
+
+    @Test
+    public void givenStringWithNoSpace_whenPassedToSubstring_thenFirstWordIsReturned() {
+        assertEquals("", getFirstWordUsingSubString("StringWithNoSpace"));
+    }
+}