Removed some redundant 'else's using early return

See spring-projectsgh-22528

Author: pradipta

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/documentation/AbstractEndpointDocumentationTests.java

@@ -77,13 +77,11 @@ protected <T> OperationPreprocessor limit(Predicate<T> filter, String... keys) {
 				Object target = payload;
 				Map<Object, Object> parent = null;
 				for (String key : keys) {
-					if (target instanceof Map) {
-						parent = (Map<Object, Object>) target;
-						target = parent.get(key);
-					}
-					else {
+					if (!(target instanceof Map)) {
 						throw new IllegalStateException();
 					}
+					parent = (Map<Object, Object>) target;
+					target = parent.get(key);
 				}
 				if (target instanceof Map) {
 					parent.put(keys[keys.length - 1], select((Map<String, Object>) target, filter));

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpoint.java

@@ -399,9 +399,7 @@ private boolean isCandidate(BeanDescription beanDesc, BeanPropertyWriter writer,
 				return Arrays.stream(bindConstructor.getParameters())
 						.anyMatch((parameter) -> parameter.getName().equals(writer.getName()));
 			}
-			else {
-				return isReadable(beanDesc, writer);
-			}
+			return isReadable(beanDesc, writer);
 		}
 
 		private boolean isReadable(BeanDescription beanDesc, BeanPropertyWriter writer) {

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

@@ -152,19 +152,17 @@ public Resource getResource(String location) {
 			if (location.startsWith(CLASSPATH_URL_PREFIX)) {
 				return new ClassPathResource(location.substring(CLASSPATH_URL_PREFIX.length()), getClassLoader());
 			}
-			else {
-				if (location.startsWith(FILE_URL_PREFIX)) {
-					return this.files.getResource(location);
-				}
-				try {
-					// Try to parse the location as a URL...
-					URL url = new URL(location);
-					return new UrlResource(url);
-				}
-				catch (MalformedURLException ex) {
-					// No URL -> resolve as resource path.
-					return getResourceByPath(location);
-				}
+			if (location.startsWith(FILE_URL_PREFIX)) {
+				return this.files.getResource(location);
+			}
+			try {
+				// Try to parse the location as a URL...
+				URL url = new URL(location);
+				return new UrlResource(url);
+			}
+			catch (MalformedURLException ex) {
+				// No URL -> resolve as resource path.
+				return getResourceByPath(location);
 			}
 		}
 

spring-boot-project/spring-boot-properties-migrator/src/main/java/org/springframework/boot/context/properties/migrator/PropertyMigration.java

@@ -127,10 +127,7 @@ String determineReason() {
 				return String.format("Reason: Replacement key '%s' uses an incompatible target type",
 						deprecation.getReplacement());
 			}
-			else {
-				return String.format("Reason: No metadata found for replacement key '%s'",
-						deprecation.getReplacement());
-			}
+			return String.format("Reason: No metadata found for replacement key '%s'", deprecation.getReplacement());
 		}
 		return "Reason: none";
 	}

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/json-shade/java/org/springframework/boot/configurationprocessor/json/JSONObject.java

@@ -596,12 +596,10 @@ public String optString(String name, String fallback) {
 	 */
 	public JSONArray getJSONArray(String name) throws JSONException {
 		Object object = get(name);
-		if (object instanceof JSONArray) {
-			return (JSONArray) object;
-		}
-		else {
+		if (!(object instanceof JSONArray)) {
 			throw JSON.typeMismatch(name, object, "JSONArray");
 		}
+		return (JSONArray) object;
 	}
 
 	/**
@@ -625,12 +623,10 @@ public JSONArray optJSONArray(String name) {
 	 */
 	public JSONObject getJSONObject(String name) throws JSONException {
 		Object object = get(name);
-		if (object instanceof JSONObject) {
-			return (JSONObject) object;
-		}
-		else {
+		if (!(object instanceof JSONObject)) {
 			throw JSON.typeMismatch(name, object, "JSONObject");
 		}
+		return (JSONObject) object;
 	}
 
 	/**

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/json-shade/java/org/springframework/boot/configurationprocessor/json/JSONTokener.java

@@ -549,15 +549,13 @@ public static int dehexchar(char hex) {
 		if (hex >= '0' && hex <= '9') {
 			return hex - '0';
 		}
-		else if (hex >= 'A' && hex <= 'F') {
+		if (hex >= 'A' && hex <= 'F') {
 			return hex - 'A' + 10;
 		}
-		else if (hex >= 'a' && hex <= 'f') {
+		if (hex >= 'a' && hex <= 'f') {
 			return hex - 'a' + 10;
 		}
-		else {
-			return -1;
-		}
+		return -1;
 	}
 
 }