Trivial refactor: use replace instead

Author: daniellansun

subprojects/groovy-groovysh/src/main/groovy/org/apache/groovy/groovysh/jline/GroovyEngine.java

@@ -409,7 +409,7 @@ public Object execute(String statement) throws Exception {
         Object out = null;
         if (statement.matches("import\\s+module\\s+([^;\\s]+)\\s*(;)?")) {
             String[] p = statement.split("\\s+");
-            String moduleName = p[2].replaceAll(";", "");
+            String moduleName = p[2].replace(";", "");
             executeStatement(shell, snippets, EnumSet.of(SnippetType.IMPORT), statement);
             imports.put("module " + moduleName, addSnippet(SnippetType.IMPORT, statement));
             // Populate the completion cache with exported packages from the module
@@ -430,14 +430,14 @@ public Object execute(String statement) throws Exception {
             }
             String classname = null;
             if (classIdx < p.length) {
-                classname = p[classIdx].replaceAll(";", "");
+                classname = p[classIdx].replace(";", "");
                 addToNameClass(classname);
                 if (isStatic) {
                     classname = "static " + classname;
                 }
                 // check for alias
                 if (p.length > 3) {
-                    classname = p[p.length - 1].replaceAll(";", "");
+                    classname = p[p.length - 1].replace(";", "");
                 }
             }
             executeStatement(shell, snippets, EnumSet.of(SnippetType.IMPORT), statement);

subprojects/groovy-groovysh/src/main/groovy/org/apache/groovy/groovysh/jline/JrtJavaBasePackages.java

@@ -77,7 +77,7 @@ public FileVisitResult visitFile(Path file, BasicFileAttributes attr) {
             try {
                 String name = file.toString().substring(18);
                 if (name.endsWith(".class") && (nestedClasses || !name.contains("$"))) {
-                    String className = name.substring(0, name.length() - 6).replaceAll("/", ".");
+                    String className = name.substring(0, name.length() - 6).replace('/', '.');
                     if (Character.isUpperCase(className.charAt(packageName.length() + 1))) {
                         classes.add(Class.forName(className));
                     } else {