Deprecated APIs replaced and code clean up

src/main/java/org/jenkinsci/plugins/displayurlapi/DisplayURLContext.java

@@ -102,18 +102,16 @@ private DisplayURLContext(DisplayURLContext parent) {
      */
     private void guessPlugin() {
         StackTraceElement[] stack = (new Throwable()).getStackTrace();
-        PluginManager manager = Jenkins.getInstance().getPluginManager();
+        PluginManager manager = Jenkins.get().getPluginManager();
         ClassLoader loader = manager.uberClassLoader;
         for (StackTraceElement frame : stack) {
             String cname = frame.getClassName();
             if (ourPluginClassNames.contains(cname)) {
                 continue;
             }
-            Optional<PluginWrapper> wrapper = CACHE.getIfPresent( cname);
+            Optional<PluginWrapper> wrapper = CACHE.getIfPresent(cname);
             if(wrapper != null){
-                if(wrapper.isPresent()){
-                    plugin = wrapper.get();
-                }
+                wrapper.ifPresent(pluginWrapper -> plugin = pluginWrapper);
             } else
             {
                 try {

src/main/java/org/jenkinsci/plugins/displayurlapi/DisplayURLDecorator.java

@@ -112,9 +112,7 @@ private static String encode(String value) {
         try {
             return URLEncoder.encode(value, "UTF-8");
         } catch (UnsupportedEncodingException e) {
-            AssertionError ae = new AssertionError("UTF-8 encoding is mandated by the JLS");
-            ae.initCause(e);
-            throw ae;
+            throw new AssertionError("UTF-8 encoding is mandated by the JLS", e);
         }
     }
 

src/main/java/org/jenkinsci/plugins/displayurlapi/DisplayURLProvider.java

@@ -1,6 +1,5 @@
 package org.jenkinsci.plugins.displayurlapi;
 
-import com.google.common.annotations.VisibleForTesting;
 import edu.umd.cs.findbugs.annotations.NonNull;
 import edu.umd.cs.findbugs.annotations.Nullable;
 import hudson.ExtensionList;

src/main/java/org/jenkinsci/plugins/displayurlapi/EnvironmentContributorImpl.java

@@ -8,13 +8,11 @@
 import hudson.model.Run;
 import hudson.model.TaskListener;
 
-import java.io.IOException;
-
 @Extension
 public class EnvironmentContributorImpl extends EnvironmentContributor {
 
     @Override
-    public void buildEnvironmentFor(@NonNull Run r, @NonNull EnvVars envs, @NonNull TaskListener listener) throws IOException, InterruptedException {
+    public void buildEnvironmentFor(@NonNull Run r, @NonNull EnvVars envs, @NonNull TaskListener listener) {
         try (DisplayURLContext ctx = DisplayURLContext.open(false)) { // environment contributor "comes from" core
             ctx.run(r);
             DisplayURLProvider urlProvider = DisplayURLProvider.get();
@@ -26,7 +24,7 @@ public void buildEnvironmentFor(@NonNull Run r, @NonNull EnvVars envs, @NonNull
     }
 
     @Override
-    public void buildEnvironmentFor(@NonNull Job j, @NonNull EnvVars envs, @NonNull TaskListener listener) throws IOException, InterruptedException {
+    public void buildEnvironmentFor(@NonNull Job j, @NonNull EnvVars envs, @NonNull TaskListener listener) {
         try (DisplayURLContext ctx = DisplayURLContext.open(false)) {
             ctx.job(j);
             envs.put("JOB_DISPLAY_URL", DisplayURLProvider.get().getJobURL(j));

src/main/java/org/jenkinsci/plugins/displayurlapi/actions/AbstractDisplayAction.java

@@ -3,7 +3,6 @@
 import com.google.common.annotations.VisibleForTesting;
 import hudson.ExtensionList;
 import hudson.model.Action;
-import hudson.model.User;
 import java.util.Objects;
 import java.util.function.Predicate;
 import org.apache.commons.lang.StringUtils;
@@ -79,11 +78,11 @@ DisplayURLProvider lookupProvider() {
         return displayURLProvider;
     }
 
-    @VisibleForTesting
-    @Deprecated
     /**
-     * @deprecated use {@link DisplayURLProvider#getUserPReferredProviderProperty}
+     * @deprecated use {@link DisplayURLProvider#getUserPreferredProviderProperty()}
      */
+    @VisibleForTesting
+    @Deprecated
     protected PreferredProviderUserProperty getUserPreferredProviderProperty() {
         return DisplayURLProvider.getUserPreferredProviderProperty();
     }

src/test/java/org/jenkinsci/plugins/displayurlapi/DisplayURLProviderTest.java

@@ -275,7 +275,7 @@ public static class DisplayURLDecoratorImpl extends DisplayURLDecorator {
         @NonNull
         @Override
         protected Map<String, String> parameters(@NonNull DisplayURLContext context) {
-            Map<String, String> result = new HashMap<String, String>();
+            Map<String, String> result = new HashMap<>();
             PluginWrapper wrapper = context.plugin();
             result.put("utm_source", "Jenkins");
             result.put("utm_campaign", wrapper == null ? "jenkins" : wrapper.getShortName());

src/test/java/org/jenkinsci/plugins/displayurlapi/actions/ActionRedirectClassicTest.java

@@ -71,7 +71,7 @@ public void testRedirectForArtifactsURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForChangesURL() throws Exception {
+    public void testRedirectForChangesURL() {
         given()
                 .urlEncodingEnabled(false)
                 .redirects().follow(false)
@@ -81,7 +81,7 @@ public void testRedirectForChangesURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForTestsURL() throws Exception {
+    public void testRedirectForTestsURL() {
         given()
                 .urlEncodingEnabled(false)
                 .redirects().follow(false)

src/test/java/org/jenkinsci/plugins/displayurlapi/actions/ActionRedirectEligibilityTest.java

@@ -11,14 +11,14 @@
 import org.jenkinsci.plugins.displayurlapi.DisplayURLProvider;
 import org.jenkinsci.plugins.displayurlapi.user.PreferredProviderUserProperty;
 import org.junit.After;
-import org.junit.Assert;
 import org.junit.Test;
 import org.jvnet.hudson.test.TestExtension;
 
 import javax.servlet.http.HttpServletResponse;
 import java.util.Collection;
 
 import static io.restassured.RestAssured.given;
+import static org.hamcrest.MatcherAssert.assertThat;
 
 public class ActionRedirectEligibilityTest extends AbstractActionRedirectTest {
 
@@ -30,7 +30,7 @@ public void tearDown() {
     }
 
     @Test
-    public void testUserChooseImplementation() throws Exception {
+    public void testUserChooseImplementation() {
         // no user then different than Classic
         propToUse = null;
         given()
@@ -70,18 +70,18 @@ public void testUserChooseImplementation() throws Exception {
     }
 
     @Test
-    public void testUserDefaultImplementation() throws Exception {
-        Assert.assertThat(DisplayURLProvider.getDefault(), Matchers.instanceOf(ClassicDisplayURLProvider.class));
+    public void testUserDefaultImplementation() {
+        assertThat(DisplayURLProvider.getDefault(), Matchers.instanceOf(ClassicDisplayURLProvider.class));
 
         System.setProperty("jenkins.displayurl.provider", EligibleDisplayURLProvider.class.getName());
-        Assert.assertThat(DisplayURLProvider.getDefault(), Matchers.instanceOf(EligibleDisplayURLProvider.class));
+        assertThat(DisplayURLProvider.getDefault(), Matchers.instanceOf(EligibleDisplayURLProvider.class));
 
         System.setProperty("jenkins.displayurl.provider", ClassicDisplayURLProvider.class.getName());
-        Assert.assertThat(DisplayURLProvider.getDefault(), Matchers.instanceOf(ClassicDisplayURLProvider.class));
+        assertThat(DisplayURLProvider.getDefault(), Matchers.instanceOf(ClassicDisplayURLProvider.class));
     }
 
     @Test
-    public void testUserDefaultImplementationForRedirection() throws Exception {
+    public void testUserDefaultImplementationForRedirection() {
         //set Classic provider
         System.setProperty("jenkins.displayurl.provider", ClassicDisplayURLProvider.class.getName());
         given()

src/test/java/org/jenkinsci/plugins/displayurlapi/actions/ActionRedirectExtendedTest.java

@@ -5,10 +5,7 @@
 import edu.umd.cs.findbugs.annotations.NonNull;
 import hudson.model.Job;
 import hudson.model.Run;
-import org.hamcrest.Matchers;
-import org.jenkinsci.plugins.displayurlapi.ClassicDisplayURLProvider;
 import org.jenkinsci.plugins.displayurlapi.DisplayURLProvider;
-import org.junit.Assert;
 import org.junit.Test;
 import org.jvnet.hudson.test.TestExtension;
 
@@ -20,7 +17,7 @@
 public class ActionRedirectExtendedTest extends AbstractActionRedirectTest {
 
     @Test
-    public void testRedirectForJobURL() throws Exception {
+    public void testRedirectForJobURL() {
         given()
             .urlEncodingEnabled(false)
             .redirects().follow(false)
@@ -30,7 +27,7 @@ public void testRedirectForJobURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForRunURL() throws Exception {
+    public void testRedirectForRunURL() {
         given()
             .urlEncodingEnabled(false)
             .redirects().follow(false)
@@ -40,7 +37,7 @@ public void testRedirectForRunURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForArtifactsURL() throws Exception {
+    public void testRedirectForArtifactsURL() {
         given()
             .urlEncodingEnabled(false)
             .redirects().follow(false)
@@ -50,7 +47,7 @@ public void testRedirectForArtifactsURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForChangesURL() throws Exception {
+    public void testRedirectForChangesURL() {
         given()
             .urlEncodingEnabled(false)
             .redirects().follow(false)
@@ -60,7 +57,7 @@ public void testRedirectForChangesURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForTestsURL() throws Exception {
+    public void testRedirectForTestsURL() {
         given()
             .urlEncodingEnabled(false)
             .redirects().follow(false)
@@ -70,7 +67,7 @@ public void testRedirectForTestsURL() throws Exception {
     }
 
     @Test
-    public void testRedirectForYetAnotherProviderParameter() throws Exception {
+    public void testRedirectForYetAnotherProviderParameter() {
         given()
             .urlEncodingEnabled(false)
             .redirects().follow(false)
@@ -80,7 +77,7 @@ public void testRedirectForYetAnotherProviderParameter() throws Exception {
     }
 
     @Test
-    public void testUrls() throws Exception {
+    public void testUrls() {
         String root = DisplayURLProvider.get().getRoot();
         assertEquals("http://localhost:" + rule.getLocalPort() + "/jenkins/", root);
         assertEquals(root + "job/my%20folder/job/my%20job/1/another", getRedirectedProvider().getRunURL(run));