Replaced all append("x") with append('x')

src/main/java/rife/bld/BaseProject.java

@@ -1546,22 +1546,22 @@ public class BaseProject extends BuildExecutor {
         var finger_print = new StringBuilder();
         for (var repository : repositories()) {
             finger_print.append(repository.toString());
-            finger_print.append("\n");
+            finger_print.append('\n');
         }
         for (var entry : dependencies().entrySet()) {
             finger_print.append(entry.getKey());
-            finger_print.append("\n");
+            finger_print.append('\n');
             if (entry.getValue() != null) {
                 for (var dependency : entry.getValue()) {
                     finger_print.append(dependency.toString());
-                    finger_print.append("\n");
+                    finger_print.append('\n');
                 }
             }
         }
         finger_print.append(downloadSources());
-        finger_print.append("\n");
+        finger_print.append('\n');
         finger_print.append(downloadJavadoc());
-        finger_print.append("\n");
+        finger_print.append('\n');
 
         try {
             var digest = MessageDigest.getInstance("SHA-1");

src/main/java/rife/bld/BuildExecutor.java

@@ -399,7 +399,7 @@ public class BuildExecutor {
                     fuzzy_regexp.append(ch);
                     fuzzy_regexp.append("\\E.*");
                 }
-                fuzzy_regexp.append("$");
+                fuzzy_regexp.append('$');
                 var fuzzy_pattern = Pattern.compile(fuzzy_regexp.toString());
                 matches.addAll(buildCommands().keySet().stream()
                     .filter(c -> fuzzy_pattern.matcher(c.toLowerCase()).matches())

src/main/java/rife/bld/dependencies/Dependency.java

@@ -130,9 +130,9 @@ public record Dependency(String groupId, String artifactId, VersionNumber versio
      */
     public String toFileName() {
         var result = new StringBuilder(artifactId());
-        result.append("-").append(version());
+        result.append('-').append(version());
         if (!classifier().isEmpty()) {
-            result.append("-").append(classifier());
+            result.append('-').append(classifier());
         }
         result.append(".").append(type());
         return result.toString();
@@ -142,13 +142,13 @@ public record Dependency(String groupId, String artifactId, VersionNumber versio
     public String toString() {
         var result = new StringBuilder(groupId).append(":").append(artifactId);
         if (!version.equals(VersionNumber.UNKNOWN)) {
-            result.append(":").append(version);
+            result.append(':').append(version);
         }
         if (!classifier.isEmpty()) {
-            result.append(":").append(classifier);
+            result.append(':').append(classifier);
         }
         if (!type.isEmpty() && !"jar".equals(type)) {
-            result.append("@").append(type);
+            result.append('@').append(type);
         }
         return result.toString();
     }

src/main/java/rife/bld/dependencies/DependencyResolver.java

@@ -315,15 +315,15 @@ public class DependencyResolver {
 
         return getArtifactLocations().stream().map(a -> {
             var result = new StringBuilder();
-            result.append(version).append("/").append(dependency_.artifactId()).append("-").append(pom_version);
+            result.append(version).append('/').append(dependency_.artifactId()).append('-').append(pom_version);
             if (!dependency_.classifier().isEmpty()) {
-                result.append("-").append(dependency_.classifier());
+                result.append('-').append(dependency_.classifier());
             }
             var type = dependency_.type();
             if (type == null) {
                 type = "jar";
             }
-            result.append(".").append(type);
+            result.append('.').append(type);
 
             return a.appendPath(result.toString());
         }).toList();

src/main/java/rife/bld/dependencies/Repository.java

@@ -159,9 +159,9 @@ public record Repository(String location, String username, String password) {
             result.append(location());
         }
         if (!location().endsWith("/")) {
-            result.append("/");
+            result.append('/');
         }
-        return result.append(group_path).append("/").append(artifactId).append("/").toString();
+        return result.append(group_path).append('/').append(artifactId).append('/').toString();
     }
 
     /**
@@ -181,11 +181,11 @@ public record Repository(String location, String username, String password) {
     public String toString() {
         var result = new StringBuilder(location);
         if (username() != null) {
-            result.append(":");
+            result.append(':');
             try {
                 result.append(StringEncryptor.MD5HLO.performEncryption(username(), null));
                 if (password() != null) {
-                    result.append(":");
+                    result.append(':');
                     result.append(StringEncryptor.MD5HLO.performEncryption(password(), null));
                 }
             } catch (NoSuchAlgorithmException e) {

src/main/java/rife/bld/dependencies/VersionNumber.java

@@ -223,7 +223,7 @@ public record VersionNumber(Integer major, Integer minor, Integer revision, Stri
             version.append(minorInt());
         }
         if (revision != null) {
-            version.append(".");
+            version.append('.');
             version.append(revisionInt());
         }
         if (qualifier != null && !qualifier.isEmpty()) {

src/main/java/rife/bld/operations/PublishOperation.java

@@ -165,15 +165,15 @@ public class PublishOperation extends AbstractOperation<PublishOperation> {
     protected void executePublishArtifacts(Repository repository, VersionNumber actualVersion) {
         // upload artifacts
         for (var artifact : artifacts()) {
-            var artifact_name = new StringBuilder(info().artifactId()).append("-").append(actualVersion);
+            var artifact_name = new StringBuilder(info().artifactId()).append('-').append(actualVersion);
             if (!artifact.classifier().isEmpty()) {
-                artifact_name.append("-").append(artifact.classifier());
+                artifact_name.append('-').append(artifact.classifier());
             }
             var type = artifact.type();
             if (type == null) {
                 type = "jar";
             }
-            artifact_name.append(".").append(type);
+            artifact_name.append('.').append(type);
 
             executePublishFileArtifact(repository, artifact.file(), info().version() + "/" + artifact_name);
         }

src/main/java/rife/bld/wrapper/Wrapper.java

@@ -364,7 +364,7 @@ public class Wrapper {
         var location = getWrapperDownloadLocation(version);
         var result = new StringBuilder(location);
         if (!location.endsWith("/")) {
-            result.append("/");
+            result.append('/');
         }
         result.append(fileName);
         return result.toString();

src/main/java/rife/bld/wrapper/WrapperExtensionResolver.java

@@ -134,7 +134,7 @@ public class WrapperExtensionResolver {
             contents.append(fingerPrintHash_);
             for (var file : localArtifacts_) {
                 if (file.exists() && file.canRead()) {
-                    contents.append("\n").append(file.lastModified()).append(":").append(file.getAbsolutePath());
+                    contents.append("\n").append(file.lastModified()).append(':').append(file.getAbsolutePath());
                 }
             }
 

src/test/java/rife/bld/operations/TestJarOperation.java

@@ -161,7 +161,7 @@ public class TestJarOperation {
                 while (e.hasMoreElements()) {
                     var jar_entry = e.nextElement();
                     content.append(jar_entry.getName());
-                    content.append("\n");
+                    content.append('\n');
                 }
             }
 
@@ -203,7 +203,7 @@ public class TestJarOperation {
                 while (e.hasMoreElements()) {
                     var jar_entry = e.nextElement();
                     content.append(jar_entry.getName());
-                    content.append("\n");
+                    content.append('\n');
                 }
             }
 

src/test/java/rife/bld/operations/TestWarOperation.java

@@ -138,7 +138,7 @@ public class TestWarOperation {
                 while (e.hasMoreElements()) {
                     var jar_entry = e.nextElement();
                     content.append(jar_entry.getName());
-                    content.append("\n");
+                    content.append('\n');
                 }
             }