Some Code Improvements

src/main/java/com/cloudbees/plugins/credentials/ContextMenuIconUtils.java

@@ -177,11 +177,7 @@ public static Icon getIconByClassSpec(String spec) {
         try {
             Method getIconByClassSpec = IconSet.class.getMethod("getIconByClassSpec", Object.class);
             return (Icon) getIconByClassSpec.invoke(IconSet.icons, spec);
-        } catch (NoSuchMethodException e) {
-            // ignore
-        } catch (IllegalAccessException e) {
-            // ignore
-        } catch (InvocationTargetException e) {
+        } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
             // ignore
         }
         return IconSet.icons.getIconByClassSpec(spec);
@@ -227,9 +223,7 @@ public static Icon getIcon(@NonNull Action action) {
             if (icon == null) {
                 icon = IconSet.icons.getIconByUrl(action.getIconFileName());
             }
-        } catch (InvocationTargetException e) {
-            icon = null;
-        } catch (IllegalAccessException e) {
+        } catch (InvocationTargetException | IllegalAccessException e) {
             icon = null;
         }
         return icon;
@@ -259,9 +253,7 @@ public static String getQualifiedUrl(@CheckForNull Icon icon) {
                 }
             }
             return null;
-        } catch (NoSuchFieldException e) {
-            // ignore we'll use a JellyContext
-        } catch (IllegalAccessException e) {
+        } catch (NoSuchFieldException | IllegalAccessException e) {
             // ignore we'll use a JellyContext
         }
         JellyContext ctx = new JellyContext();

src/main/java/com/cloudbees/plugins/credentials/CredentialsDescriptor.java

@@ -496,9 +496,7 @@ public void calcFillSettings(String field, Map<String, Object> attributes) {
                     }
 
                 }
-            } catch (AssertionError e) {
-                // ignore, we did the best we could
-            } catch (UnsupportedEncodingException e) {
+            } catch (AssertionError | UnsupportedEncodingException e) {
                 // ignore, we did the best we could
             }
         }
@@ -542,9 +540,7 @@ public void calcAutoCompleteSettings(String field, Map<String, Object> attribute
                     }
 
                 }
-            } catch (AssertionError e) {
-                // ignore, we did the best we could
-            } catch (UnsupportedEncodingException e) {
+            } catch (AssertionError | UnsupportedEncodingException e) {
                 // ignore, we did the best we could
             }
         }
@@ -601,9 +597,7 @@ public String toCheckUrl() {
                     }
 
                 }
-            } catch (AssertionError e) {
-                // ignore, we did the best we could
-            } catch (UnsupportedEncodingException e) {
+            } catch (AssertionError | UnsupportedEncodingException e) {
                 // ignore, we did the best we could
             }
             return checkUrl;

src/main/java/com/cloudbees/plugins/credentials/CredentialsMatchers.java

@@ -603,11 +603,7 @@ public void exitLiteral(CQLParser.LiteralContext ctx) {
                     Class<?> enumClazz = Class.forName(enumClass);
                     Field field = enumClazz.getDeclaredField(enumConst);
                     literal = (Serializable) field.get(null);
-                } catch (ClassNotFoundException e) {
-                    e.printStackTrace();
-                } catch (NoSuchFieldException e) {
-                    e.printStackTrace();
-                } catch (IllegalAccessException e) {
+                } catch (ClassNotFoundException | NoSuchFieldException | IllegalAccessException e) {
                     e.printStackTrace();
                 }
             }

src/main/java/com/cloudbees/plugins/credentials/CredentialsNameProvider.java

@@ -91,11 +91,7 @@ Result name(@NonNull Credentials credentials, @NonNull Class<?> clazz) {
             try {
                 CredentialsNameProvider nameProvider = nameWith.value().newInstance();
                 return new Result(nameProvider.getName(credentials), nameWith.priority());
-            } catch (ClassCastException e) {
-                // ignore
-            } catch (InstantiationException e) {
-                // ignore
-            } catch (IllegalAccessException e) {
+            } catch (ClassCastException | InstantiationException | IllegalAccessException e) {
                 // ignore
             }
         }

src/main/java/com/cloudbees/plugins/credentials/CredentialsParameterDefinition.java

@@ -12,7 +12,6 @@
 import hudson.security.ACL;
 import hudson.util.ListBoxModel;
 import java.util.Collections;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import jenkins.model.Jenkins;

src/main/java/com/cloudbees/plugins/credentials/CredentialsProviderManager.java

@@ -42,6 +42,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import jenkins.model.GlobalConfiguration;
@@ -299,11 +300,11 @@ public int compare(CredentialsProviderTypeRestriction o1, CredentialsProviderTyp
                         if (index2 == -1) {
                             return -1;
                         }
-                        return index1 < index2 ? -1 : (index1 == index2 ? 0 : 1);
+                        return Integer.compare(index1, index2);
                     }
                 });
             }
-            if (restrictions == null ? this.restrictions != null : !restrictions.equals(this.restrictions)) {
+            if (!Objects.equals(restrictions, this.restrictions)) {
                 this.restrictions = restrictions;
                 this.restrictionGroups = null;
                 try {

src/main/java/com/cloudbees/plugins/credentials/CredentialsResolver.java

@@ -135,10 +135,7 @@ public static <C extends Credentials> CredentialsResolver<Credentials, C> getRes
                 }
                 LOGGER.log(Level.SEVERE, "Resolver {0} for type {1} resolves to {2} which is not assignable to {1}",
                         new Object[]{resolver.getClass(), clazz, resolver.getToClass()});
-            } catch (InstantiationException e) {
-                LOGGER.log(Level.WARNING, "Could not instantiate resolver: " + resolveWith.value(), e);
-                return null;
-            } catch (IllegalAccessException e) {
+            } catch (InstantiationException | IllegalAccessException e) {
                 LOGGER.log(Level.WARNING, "Could not instantiate resolver: " + resolveWith.value(), e);
                 return null;
             }

src/main/java/com/cloudbees/plugins/credentials/CredentialsSelectHelper.java

@@ -899,9 +899,7 @@ public ModelObject getContext(String token) {
             } catch (NoSuchMethodException e) {
                 // old Jenkins pre SECURITY-243
                 return User.get(token, false, Collections.emptyMap());
-            } catch (InvocationTargetException e) {
-                return null;
-            } catch (IllegalAccessException e) {
+            } catch (InvocationTargetException | IllegalAccessException e) {
                 return null;
             }
         }

src/main/java/com/cloudbees/plugins/credentials/CredentialsStoreAction.java

@@ -545,9 +545,7 @@ public HttpResponse doCreateDomain(StaplerRequest req) throws ServletException,
             try {
                 XMLUtils.safeTransform(new StreamSource(req.getReader()), new StreamResult(out));
                 out.close();
-            } catch (TransformerException e) {
-                throw new IOException("Failed to parse credential", e);
-            } catch (SAXException e) {
+            } catch (TransformerException | SAXException e) {
                 throw new IOException("Failed to parse credential", e);
             }
 
@@ -810,9 +808,7 @@ public HttpResponse doCreateCredentials(StaplerRequest req) throws ServletExcept
                 try {
                     XMLUtils.safeTransform(new StreamSource(req.getReader()), new StreamResult(out));
                     out.close();
-                } catch (TransformerException e) {
-                    throw new IOException("Failed to parse credential", e);
-                } catch (SAXException e) {
+                } catch (TransformerException | SAXException e) {
                     throw new IOException("Failed to parse credential", e);
                 }
 
@@ -1007,9 +1003,7 @@ public void updateByXml(Source source) throws IOException {
             try {
                 XMLUtils.safeTransform(source, new StreamResult(out));
                 out.close();
-            } catch (TransformerException e) {
-                throw new IOException("Failed to parse credential", e);
-            } catch (SAXException e) {
+            } catch (TransformerException | SAXException e) {
                 throw new IOException("Failed to parse credential", e);
             }
 

src/main/java/com/cloudbees/plugins/credentials/GlobalCredentialsConfiguration.java

@@ -42,7 +42,6 @@
 import jenkins.model.GlobalConfigurationCategory;
 import jenkins.model.Jenkins;
 import net.sf.json.JSONObject;
-import org.jenkins.ui.icon.IconSpec;
 import org.kohsuke.accmod.Restricted;
 import org.kohsuke.accmod.restrictions.NoExternalUse;
 import org.kohsuke.stapler.HttpResponse;

src/main/java/com/cloudbees/plugins/credentials/PluginImpl.java

@@ -24,7 +24,6 @@
 package com.cloudbees.plugins.credentials;
 
 import hudson.Plugin;
-import java.util.Arrays;
 import org.jenkins.ui.icon.Icon;
 import org.jenkins.ui.icon.IconSet;
 import org.jenkins.ui.icon.IconType;

src/main/java/com/cloudbees/plugins/credentials/UserCredentialsProvider.java

@@ -43,7 +43,6 @@
 import hudson.security.ACL;
 import hudson.security.AccessDeniedException2;
 import hudson.security.Permission;
-import hudson.util.CopyOnWriteMap;
 import java.io.IOException;
 import java.io.ObjectStreamException;
 import java.net.URI;

src/main/java/com/cloudbees/plugins/credentials/cli/BaseCredentialsCLICommand.java

@@ -99,9 +99,7 @@ protected static HierarchicalStreamReader safeXmlStreamReader(Source source) thr
         try {
             XMLUtils.safeTransform(source, new StreamResult(out));
             out.close();
-        } catch (TransformerException e) {
-            throw new IOException("Failed to parse", e);
-        } catch (SAXException e) {
+        } catch (TransformerException | SAXException e) {
             throw new IOException("Failed to parse", e);
         }
         return new XppDriver().createReader(new StringReader(out.toString()));

src/main/java/com/cloudbees/plugins/credentials/domains/AntPathMatcher.java

@@ -245,8 +245,8 @@ private boolean matchStrings(String pattern, String str) {
         char ch;
 
         boolean containsStar = false;
-        for (int i = 0; i < patArr.length; i++) {
-            if (patArr[i] == '*') {
+        for (char c : patArr) {
+            if (c == '*') {
                 containsStar = true;
                 break;
             }
@@ -390,7 +390,7 @@ public String extractPathWithinPattern(String pattern, String path) {
         String[] patternParts = StringUtils.split(pattern, this.pathSeparator);
         String[] pathParts = StringUtils.split(path, this.pathSeparator);
 
-        StringBuffer buffer = new StringBuffer();
+        StringBuilder buffer = new StringBuilder();
 
         // Add any path parts that have a wildcarded pattern part.
         int puts = 0;

src/main/java/com/cloudbees/plugins/credentials/domains/Domain.java

@@ -34,6 +34,8 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.Objects;
+
 import org.kohsuke.stapler.DataBoundConstructor;
 
 /**
@@ -224,11 +226,7 @@ public boolean equals(Object o) {
 
         Domain domain = (Domain) o;
 
-        if (name != null ? !name.equals(domain.name) : domain.name != null) {
-            return false;
-        }
-
-        return true;
+        return Objects.equals(name, domain.name);
     }
 
     /**

src/main/java/com/cloudbees/plugins/credentials/impl/BaseStandardCredentials.java

@@ -31,9 +31,7 @@
 import com.cloudbees.plugins.credentials.CredentialsMatchers;
 import com.cloudbees.plugins.credentials.CredentialsProvider;
 import com.cloudbees.plugins.credentials.CredentialsScope;
-import com.cloudbees.plugins.credentials.CredentialsSelectHelper;
 import com.cloudbees.plugins.credentials.CredentialsStore;
-import com.cloudbees.plugins.credentials.CredentialsStoreAction;
 import com.cloudbees.plugins.credentials.common.IdCredentials;
 import com.cloudbees.plugins.credentials.common.StandardCredentials;
 import com.cloudbees.plugins.credentials.domains.Domain;
@@ -47,10 +45,7 @@
 import hudson.util.FormValidation;
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
-import java.util.EnumSet;
-import java.util.Set;
 import jenkins.model.Jenkins;
-import org.apache.commons.lang.StringUtils;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.export.Exported;
 import org.kohsuke.stapler.export.ExportedBean;

src/main/java/com/cloudbees/plugins/credentials/impl/CertificateCredentialsImpl.java

@@ -156,17 +156,7 @@ public synchronized KeyStore getKeyStore() {
             }
             try {
                 keyStore.load(new ByteArrayInputStream(keyStoreSource.getKeyStoreBytes()), toCharArray(password));
-            } catch (CertificateException e) {
-                LogRecord lr = new LogRecord(Level.WARNING, "Credentials ID {0}: Could not load keystore from {1}");
-                lr.setParameters(new Object[]{getId(), keyStoreSource});
-                lr.setThrown(e);
-                LOGGER.log(lr);
-            } catch (NoSuchAlgorithmException e) {
-                LogRecord lr = new LogRecord(Level.WARNING, "Credentials ID {0}: Could not load keystore from {1}");
-                lr.setParameters(new Object[]{getId(), keyStoreSource});
-                lr.setThrown(e);
-                LOGGER.log(lr);
-            } catch (IOException e) {
+            } catch (CertificateException | NoSuchAlgorithmException | IOException e) {
                 LogRecord lr = new LogRecord(Level.WARNING, "Credentials ID {0}: Could not load keystore from {1}");
                 lr.setParameters(new Object[]{getId(), keyStoreSource});
                 lr.setThrown(e);
@@ -336,13 +326,7 @@ protected static FormValidation validateCertificateKeystore(String type, byte[]
                 return FormValidation.ok(StringUtils
                         .defaultIfEmpty(StandardCertificateCredentials.NameProvider.getSubjectDN(keyStore),
                                 buf.toString()));
-            } catch (KeyStoreException e) {
-                return FormValidation.warning(e, Messages.CertificateCredentialsImpl_LoadKeystoreFailed());
-            } catch (CertificateException e) {
-                return FormValidation.warning(e, Messages.CertificateCredentialsImpl_LoadKeystoreFailed());
-            } catch (NoSuchAlgorithmException e) {
-                return FormValidation.warning(e, Messages.CertificateCredentialsImpl_LoadKeystoreFailed());
-            } catch (IOException e) {
+            } catch (KeyStoreException | CertificateException | NoSuchAlgorithmException | IOException e) {
                 return FormValidation.warning(e, Messages.CertificateCredentialsImpl_LoadKeystoreFailed());
             } finally {
                 if (passwordChars != null) {
@@ -698,13 +682,7 @@ public HttpResponse doUpload(@NonNull StaplerRequest req) throws ServletExceptio
             Method m = XStream2.class.getMethod("addCriticalField", Class.class, String.class);
             m.invoke(Items.XSTREAM2, CertificateCredentialsImpl.class, "keyStoreSource");
         }
-        catch (IllegalAccessException e) {
-            throw new ExceptionInInitializerError(e);
-        }
-        catch (InvocationTargetException e) {
-            throw new ExceptionInInitializerError(e);
-        }
-        catch (NoSuchMethodException e) {
+        catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
             throw new ExceptionInInitializerError(e);
         }
     }

src/main/java/com/cloudbees/plugins/credentials/matchers/BeanPropertyMatcher.java

@@ -34,6 +34,8 @@
 import java.io.Serializable;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.Objects;
+
 import org.apache.commons.lang.StringEscapeUtils;
 
 /**
@@ -109,10 +111,8 @@ public boolean matches(@NonNull Credentials item) {
                     }
                     try {
                         Object actual = readMethod.invoke(item);
-                        return expected == null ? actual == null : expected.equals(actual);
-                    } catch (IllegalAccessException e) {
-                        return false; // if we cannot access it then it's not a match
-                    } catch (InvocationTargetException e) {
+                        return Objects.equals(expected, actual);
+                    } catch (IllegalAccessException | InvocationTargetException e) {
                         return false; // if we cannot access it then it's not a match
                     }
                 }
@@ -150,7 +150,7 @@ public boolean equals(Object o) {
         if (!name.equals(that.name)) {
             return false;
         }
-        return expected != null ? expected.equals(that.expected) : that.expected == null;
+        return Objects.equals(expected, that.expected);
 
     }