Merge branch 'master' of https://github.com/eugenp/tutorials into JAVA-1672

2021-11-08 21:44:23 +05:30
parent 1d328e79d3 3ab032d095
commit a14ec68229
6 changed files with 113 additions and 0 deletions
@@ -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];
+    }
+}
@@ -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"));
+    }
+}