Polish contribution

Fix additional use of \n

Closes gh-4707

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/ShellProperties.java

 /*
- * Copyright 2013-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -429,8 +429,9 @@ public class ShellProperties {
 			config.put("crash.auth.simple.username", this.user.getName());
 			config.put("crash.auth.simple.password", this.user.getPassword());
 			if (this.user.isDefaultPassword()) {
-				logger.info("\n\nUsing default password for shell access: "
-						+ this.user.getPassword() + "\n\n");
+				logger.info(String.format(
+						"%n%nUsing default password for shell access: %s%n%n",
+						this.user.getPassword()));
 			}
 		}
 

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/logging/AutoConfigurationReportLoggingInitializer.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -109,9 +109,9 @@ public class AutoConfigurationReportLoggingInitializer
 		if (!this.report.getConditionAndOutcomesBySource().isEmpty()) {
 			if (isCrashReport && this.logger.isInfoEnabled()
 					&& !this.logger.isDebugEnabled()) {
-				this.logger.info("\n\nError starting ApplicationContext. "
+				this.logger.info(String.format("%n%nError starting ApplicationContext. "
 						+ "To display the auto-configuration report enable "
-						+ "debug logging (start with --debug)\n\n");
+						+ "debug logging (start with --debug)%n%n"));
 			}
 			if (this.logger.isDebugEnabled()) {
 				this.logger.debug(getLogMessage(this.report));
@@ -121,12 +121,12 @@ public class AutoConfigurationReportLoggingInitializer
 
 	private StringBuilder getLogMessage(ConditionEvaluationReport report) {
 		StringBuilder message = new StringBuilder();
-		message.append("\n\n\n");
-		message.append("=========================\n");
-		message.append("AUTO-CONFIGURATION REPORT\n");
-		message.append("=========================\n\n\n");
-		message.append("Positive matches:\n");
-		message.append("-----------------\n");
+		message.append(String.format("%n%n%n"));
+		message.append(String.format("=========================%n"));
+		message.append(String.format("AUTO-CONFIGURATION REPORT%n"));
+		message.append(String.format("=========================%n%n%n"));
+		message.append(String.format("Positive matches:%n"));
+		message.append(String.format("-----------------%n"));
 		Map<String, ConditionAndOutcomes> shortOutcomes = orderByName(
 				report.getConditionAndOutcomesBySource());
 		for (Map.Entry<String, ConditionAndOutcomes> entry : shortOutcomes.entrySet()) {
@@ -134,37 +134,37 @@ public class AutoConfigurationReportLoggingInitializer
 				addLogMessage(message, entry.getKey(), entry.getValue());
 			}
 		}
-		message.append("\n\n");
-		message.append("Negative matches:\n");
-		message.append("-----------------\n");
+		message.append(String.format("%n%n"));
+		message.append(String.format("Negative matches:%n"));
+		message.append(String.format("-----------------%n"));
 		for (Map.Entry<String, ConditionAndOutcomes> entry : shortOutcomes.entrySet()) {
 			if (!entry.getValue().isFullMatch()) {
 				addLogMessage(message, entry.getKey(), entry.getValue());
 			}
 		}
-		message.append("\n\n");
-		message.append("Exclusions:\n");
-		message.append("-----------\n");
+		message.append(String.format("%n%n"));
+		message.append(String.format("Exclusions:%n"));
+		message.append(String.format("-----------%n"));
 		if (report.getExclusions().isEmpty()) {
-			message.append("\n    None\n");
+			message.append(String.format("%n    None%n"));
 		}
 		else {
 			for (String exclusion : report.getExclusions()) {
-				message.append("\n   " + exclusion + "\n");
+				message.append(String.format("%n    %s%n", exclusion));
 			}
 		}
-		message.append("\n\n");
-		message.append("Unconditional classes:\n");
-		message.append("----------------------\n");
+		message.append(String.format("%n%n"));
+		message.append(String.format("Unconditional classes:%n"));
+		message.append(String.format("----------------------%n"));
 		if (report.getUnconditionalClasses().isEmpty()) {
-			message.append("\n    None\n");
+			message.append(String.format("%n    None%n"));
 		}
 		else {
 			for (String unconditionalClass : report.getUnconditionalClasses()) {
-				message.append("\n   " + unconditionalClass + "\n");
+				message.append(String.format("%n    %s%n", unconditionalClass));
 			}
 		}
-		message.append("\n\n");
+		message.append(String.format("%n%n"));
 		return message;
 	}
 
@@ -187,9 +187,10 @@ public class AutoConfigurationReportLoggingInitializer
 
 	private void addLogMessage(StringBuilder message, String source,
 			ConditionAndOutcomes conditionAndOutcomes) {
-		message.append("\n   " + source);
+		message.append(String.format("%n   %s", source));
 		message.append(
-				conditionAndOutcomes.isFullMatch() ? " matched\n" : " did not match\n");
+				conditionAndOutcomes.isFullMatch() ? " matched" : " did not match")
+				.append(String.format("%n"));
 		for (ConditionAndOutcome conditionAndOutcome : conditionAndOutcomes) {
 			message.append("      - ");
 			if (StringUtils.hasLength(conditionAndOutcome.getOutcome().getMessage())) {
@@ -202,7 +203,7 @@ public class AutoConfigurationReportLoggingInitializer
 			message.append(" (");
 			message.append(ClassUtils
 					.getShortName(conditionAndOutcome.getCondition().getClass()));
-			message.append(")\n");
+			message.append(String.format(")%n"));
 		}
 
 	}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/AuthenticationManagerConfiguration.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -167,8 +167,8 @@ public class AuthenticationManagerConfiguration {
 			}
 			User user = this.securityProperties.getUser();
 			if (user.isDefaultPassword()) {
-				logger.info("\n\nUsing default security password: " + user.getPassword()
-						+ "\n");
+				logger.info(String.format(
+						"%n%nUsing default security password: %s%n", user.getPassword()));
 			}
 			Set<String> roles = new LinkedHashSet<String>(user.getRole());
 			withUser(user.getName()).password(user.getPassword())

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/oauth2/authserver/OAuth2AuthorizationServerConfiguration.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

spring-boot-cli/src/main/java/org/springframework/boot/cli/command/CommandRunner.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/Shell.java

 /*
- * Copyright 2012-2014 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -181,7 +181,7 @@ public class Shell {
 		if (this.commandRunner.handleSigInt()) {
 			return;
 		}
-		System.out.println("\nThanks for using Spring Boot");
+		System.out.println(String.format("%nThanks for using Spring Boot"));
 		System.exit(1);
 	}
 

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

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -159,8 +159,8 @@ public class DependencyManagementBomTransformation
 	}
 
 	private void handleMalformedDependency(Expression expression) {
-		Message message = createSyntaxErrorMessage(
-				"The string must be of the form \"group:module:version\"\n", expression);
+		Message message = createSyntaxErrorMessage(String.format(
+				"The string must be of the form \"group:module:version\"%n"), expression);
 		getSourceUnit().getErrorCollector().addErrorAndContinue(message);
 	}
 

spring-boot/src/main/java/org/springframework/boot/bind/PropertiesConfigurationFactory.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -231,7 +231,7 @@ public class PropertiesConfigurationFactory<T>
 		try {
 			if (this.logger.isTraceEnabled()) {
 				if (this.properties != null) {
-					this.logger.trace("Properties:\n" + this.properties);
+					this.logger.trace(String.format("Properties:%n%s" + this.properties));
 				}
 				else {
 					this.logger.trace("Property Sources: " + this.propertySources);

spring-boot/src/main/java/org/springframework/boot/bind/YamlConfigurationFactory.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -138,7 +138,7 @@ public class YamlConfigurationFactory<T>
 				+ "either set it directly or set the resource to load it from");
 		try {
 			if (this.logger.isTraceEnabled()) {
-				this.logger.trace("Yaml document is\n" + this.yaml);
+				this.logger.trace(String.format("Yaml document is %n%s" + this.yaml));
 			}
 			Constructor constructor = new YamlJavaBeanPropertyConstructor(this.type,
 					this.propertyAliases);

spring-boot/src/main/java/org/springframework/boot/context/ConfigurationWarningsApplicationContextInitializer.java

 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -105,7 +105,7 @@ public class ConfigurationWarningsApplicationContextInitializer
 
 		private void warn(String message) {
 			if (logger.isWarnEnabled()) {
-				logger.warn("\n\n** WARNING ** : " + message + "\n\n");
+				logger.warn(String.format("%n%n** WARNING ** : %s%n%n", message));
 			}
 		}
 

spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java

@@ -145,13 +145,13 @@ public class LogbackLoggingSystem extends Slf4JLoggingSystem {
 		StringBuilder errors = new StringBuilder();
 		for (Status status : statuses) {
 			if (status.getLevel() == Status.ERROR) {
-				errors.append(errors.length() > 0 ? "\n" : "");
+				errors.append(errors.length() > 0 ? String.format("%n") : "");
 				errors.append(status.toString());
 			}
 		}
 		if (errors.length() > 0) {
-			throw new IllegalStateException(
-					"Logback configuration error " + "detected: \n" + errors);
+			throw new IllegalStateException(String.format(
+					"Logback configuration error detected: %n%s", errors));
 		}
 	}