Use interfaces for collection declarations

Closes gh-11839

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/info/Info.java

@@ -40,7 +40,7 @@ public final class Info {
 	private final Map<String, Object> details;
 
 	private Info(Builder builder) {
-		LinkedHashMap<String, Object> content = new LinkedHashMap<>();
+		Map<String, Object> content = new LinkedHashMap<>();
 		content.putAll(builder.content);
 		this.details = Collections.unmodifiableMap(content);
 	}

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/DefaultCommandFactory.java

@@ -42,7 +42,7 @@ public class DefaultCommandFactory implements CommandFactory {
 	private static final List<Command> DEFAULT_COMMANDS;
 
 	static {
-		ArrayList<Command> defaultCommands = new ArrayList<>();
+		List<Command> defaultCommands = new ArrayList<>();
 		defaultCommands.add(new VersionCommand());
 		defaultCommands.add(new RunCommand());
 		defaultCommands.add(new GrabCommand());

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/init/ServiceCapabilitiesReportGenerator.java

@@ -93,7 +93,7 @@ class ServiceCapabilitiesReportGenerator {
 	}
 
 	private List<Dependency> getSortedDependencies(InitializrServiceMetadata metadata) {
-		ArrayList<Dependency> dependencies = new ArrayList<>(metadata.getDependencies());
+		List<Dependency> dependencies = new ArrayList<>(metadata.getDependencies());
 		dependencies.sort(Comparator.comparing(Dependency::getId));
 		return dependencies;
 	}

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/options/OptionHandler.java

@@ -150,7 +150,7 @@ public class OptionHandler {
 
 	private static class OptionHelpAdapter implements OptionHelp {
 
-		private final LinkedHashSet<String> options;
+		private final Set<String> options;
 
 		private final String description;
 

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/compiler/AstUtils.java

@@ -167,7 +167,7 @@ public abstract class AstUtils {
 
 	private static List<ExpressionStatement> getExpressionStatements(
 			BlockStatement block) {
-		ArrayList<ExpressionStatement> statements = new ArrayList<>();
+		List<ExpressionStatement> statements = new ArrayList<>();
 		for (Statement statement : block.getStatements()) {
 			if (statement instanceof ExpressionStatement) {
 				statements.add((ExpressionStatement) statement);

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/compiler/GroovyCompiler.java

@@ -257,7 +257,7 @@ public class GroovyCompiler {
 		});
 	}
 
-	private int getIndexOfASTTransformationVisitor(LinkedList<?> conversionOperations) {
+	private int getIndexOfASTTransformationVisitor(List<?> conversionOperations) {
 		for (int index = 0; index < conversionOperations.size(); index++) {
 			if (conversionOperations.get(index).getClass().getName()
 					.startsWith(ASTTransformationVisitor.class.getName())) {

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/builder/SpringApplicationBuilder.java

@@ -424,7 +424,7 @@ public class SpringApplicationBuilder {
 	}
 
 	private Map<String, Object> getMapFromProperties(Properties properties) {
-		HashMap<String, Object> map = new HashMap<>();
+		Map<String, Object> map = new HashMap<>();
 		for (Object key : Collections.list(properties.propertyNames())) {
 			map.put((String) key, properties.get(key));
 		}