Add string to date snippet

iluwatar · iluwatar · commit f2011344d89b · 2017-12-18T21:33:25.000+02:00
diff --git a/README.md b/README.md
@@ -25,6 +25,7 @@ Update the sample application with the snippet and add a test for it. After prov
 
 ### String
 * [Reverse string](#reverse-string)
+* [String to date](#string-to-date)
 
 ## Array
 
@@ -126,3 +127,14 @@ Update the sample application with the snippet and add a test for it. After prov
 ```
 
 [⬆ back to top](#table-of-contents)
+
+### String to date
+
+```java
+    public static Date stringToDate(String date, String format) throws ParseException {
+        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
+        return simpleDateFormat.parse(date);
+    }
+```
+
+[⬆ back to top](#table-of-contents)
diff --git a/src/main/java/Library.java b/src/main/java/Library.java
@@ -4,7 +4,10 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
 import java.util.Arrays;
+import java.util.Date;
 import java.util.List;
 
 /*
@@ -106,4 +109,16 @@ public static void captureScreen(String filename) throws AWTException, IOExcepti
         BufferedImage image = robot.createScreenCapture(screenRectangle);
         ImageIO.write(image, "png", new File(filename));
     }
+
+    /**
+     * Convert string to date
+     * @param date the date string
+     * @param format expected date format
+     * @return Date
+     * @throws ParseException
+     */
+    public static Date stringToDate(String date, String format) throws ParseException {
+        SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
+        return simpleDateFormat.parse(date);
+    }
 }
diff --git a/src/test/java/LibraryTest.java b/src/test/java/LibraryTest.java
@@ -4,6 +4,9 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.text.ParseException;
+import java.util.Calendar;
+import java.util.Date;
 import java.util.List;
 
 import static org.junit.Assert.*;
@@ -125,4 +128,15 @@ public void testCaptureScreen() throws IOException, AWTException {
             Files.deleteIfExists(new File(filename).toPath());
         }
     }
+    /**
+     * Tests for {@link Library#stringToDate(String, String)}
+     */
+    @Test
+    public void testStringToDate() throws ParseException {
+        Calendar calendar = Calendar.getInstance();
+        calendar.setTime(Library.stringToDate("2017-08-18", "yyyy-MM-dd"));
+        assertEquals(2017, calendar.get(Calendar.YEAR));
+        assertEquals(8, calendar.get(Calendar.MONTH) + 1);
+        assertEquals(18, calendar.get(Calendar.DAY_OF_MONTH));
+    }
 }
