From 684f9f01e912c5f92f21c0f0826c58f7ff5a2d47 Mon Sep 17 00:00:00 2001
From: Ritu Priya <priya.ritu89@gmail.com>
Date: Thu, 13 Oct 2022 09:47:06 +0530
Subject: [PATCH] BAEL-5752: Check for valid URL in java (#12836)

---
 .../core-java-networking-3/pom.xml            |  7 +++
 .../baeldung/urlvalidation/UrlValidation.java | 36 +++++++++++++++
 .../urlvalidation/UrlValidateUnitTest.java    | 44 +++++++++++++++++++
 3 files changed, 87 insertions(+)
 create mode 100644 core-java-modules/core-java-networking-3/src/main/java/com/baeldung/urlvalidation/UrlValidation.java
 create mode 100644 core-java-modules/core-java-networking-3/src/test/java/com/baeldung/urlvalidation/UrlValidateUnitTest.java

diff --git a/core-java-modules/core-java-networking-3/pom.xml b/core-java-modules/core-java-networking-3/pom.xml
index 91ae7ccc3f..4f373238ee 100644
--- a/core-java-modules/core-java-networking-3/pom.xml
+++ b/core-java-modules/core-java-networking-3/pom.xml
@@ -58,6 +58,12 @@
             <artifactId>guava</artifactId>
             <version>${guava.version}</version>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/commons-validator/commons-validator -->
+        <dependency>
+            <groupId>commons-validator</groupId>
+            <artifactId>commons-validator</artifactId>
+            <version>${apache.commons-validator.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -90,6 +96,7 @@
         <jgonian.commons-ip-math.version>1.32</jgonian.commons-ip-math.version>
         <googlecode.ipv6.version>0.17</googlecode.ipv6.version>
         <javax.mail.version>1.6.2</javax.mail.version>
+        <apache.commons-validator.version>1.7</apache.commons-validator.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/core-java-modules/core-java-networking-3/src/main/java/com/baeldung/urlvalidation/UrlValidation.java b/core-java-modules/core-java-networking-3/src/main/java/com/baeldung/urlvalidation/UrlValidation.java
new file mode 100644
index 0000000000..b529448200
--- /dev/null
+++ b/core-java-modules/core-java-networking-3/src/main/java/com/baeldung/urlvalidation/UrlValidation.java
@@ -0,0 +1,36 @@
+package com.baeldung.urlvalidation;
+
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+import java.net.URL;
+
+import org.apache.commons.validator.routines.UrlValidator;
+
+public class UrlValidation {
+    public boolean isValidURLJavaNet(String url) throws MalformedURLException, URISyntaxException {
+        try {
+            new URL(url).toURI();
+            return true;
+        } catch (MalformedURLException e) {
+            return false;
+        } catch (URISyntaxException e) {
+            return false;
+            
+        }
+    }
+    
+    public boolean invalidUrlAsValidJavaNet(String url) throws MalformedURLException {
+        try {
+            new URL(url);
+            return true;
+        } catch (MalformedURLException e) {
+            return false;
+        }
+    }
+    
+    public boolean isValidURLApache(String url) throws MalformedURLException {
+        UrlValidator validator = new UrlValidator();
+        return validator.isValid(url);
+    }
+    
+}
\ No newline at end of file
diff --git a/core-java-modules/core-java-networking-3/src/test/java/com/baeldung/urlvalidation/UrlValidateUnitTest.java b/core-java-modules/core-java-networking-3/src/test/java/com/baeldung/urlvalidation/UrlValidateUnitTest.java
new file mode 100644
index 0000000000..ef04216a9f
--- /dev/null
+++ b/core-java-modules/core-java-networking-3/src/test/java/com/baeldung/urlvalidation/UrlValidateUnitTest.java
@@ -0,0 +1,44 @@
+package com.baeldung.urlvalidation;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
+
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+
+import org.junit.Test;
+
+import com.baeldung.urlvalidation.UrlValidation;
+
+public class UrlValidateUnitTest {
+    
+    @Test
+    public void givenValidStringAsURL_whenUsingJDK_shouldReturnTrue() throws MalformedURLException, URISyntaxException {
+        UrlValidation urlValidator = new UrlValidation();
+        assertTrue(urlValidator.isValidURLJavaNet("http://baeldung.com/"));
+    }
+    
+    @Test
+    public void givenInvalidStringAsURL_whenUsingJDK_shouldReturnFalse() throws MalformedURLException, URISyntaxException {
+        UrlValidation urlValidator = new UrlValidation();
+        assertFalse(urlValidator.isValidURLJavaNet("https://www.baeldung.com/ java-%%$^&& iuyi"));
+    }
+    
+    @Test
+    public void givenInvalidStringAsURL_whenUsingJDK_shouldReturnTrue() throws MalformedURLException {
+        UrlValidation urlValidator = new UrlValidation();
+        assertTrue(urlValidator.invalidUrlAsValidJavaNet("https://www.baeldung.com/ java-%%$^&& iuyi"));
+    }
+    
+    @Test
+    public void givenValidStringAsURL_whenUsingApache_shouldReturnTrue() throws MalformedURLException {
+        UrlValidation urlValidator = new UrlValidation();
+        assertTrue(urlValidator.isValidURLApache("http://baeldung.com/"));
+    }
+    
+    @Test
+    public void givenInvalidStringAsURL_whenUsingApache_shouldReturnFalse() throws MalformedURLException {
+        UrlValidation urlValidator = new UrlValidation();
+        assertFalse(urlValidator.isValidURLApache("https://www.baeldung.com/ java-%%$^&& iuyi"));
+    }
+}
\ No newline at end of file