Simplify String concatenation

spring-aop/src/main/java/org/springframework/aop/aspectj/AspectJExpressionPointcut.java

@@ -544,9 +544,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 
 	@Override
 	public String toString() {
-		StringBuilder sb = new StringBuilder();
-		sb.append("AspectJExpressionPointcut: ");
-		sb.append("(");
+		StringBuilder sb = new StringBuilder("AspectJExpressionPointcut: (");
 		for (int i = 0; i < this.pointcutParameterTypes.length; i++) {
 			sb.append(this.pointcutParameterTypes[i].getName());
 			sb.append(" ");
@@ -555,8 +553,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 				sb.append(", ");
 			}
 		}
-		sb.append(")");
-		sb.append(" ");
+		sb.append(") ");
 		if (getExpression() != null) {
 			sb.append(getExpression());
 		}

spring-beans/src/main/java/org/springframework/beans/AbstractNestablePropertyAccessor.java

@@ -987,14 +987,11 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
 
 	@Override
 	public String toString() {
-		StringBuilder sb = new StringBuilder(getClass().getName());
-		if (this.wrappedObject != null) {
-			sb.append(": wrapping object [").append(ObjectUtils.identityToString(this.wrappedObject)).append("]");
+		String className = getClass().getName();
+		if (this.wrappedObject == null) {
+			return className + ": no wrapped object set";
 		}
-		else {
-			sb.append(": no wrapped object set");
-		}
-		return sb.toString();
+		return className + ": wrapping object [" + ObjectUtils.identityToString(this.wrappedObject) + ']';
 	}
 
 

spring-beans/src/main/java/org/springframework/beans/MutablePropertyValues.java

@@ -380,11 +380,10 @@ public class MutablePropertyValues implements PropertyValues, Serializable {
 	@Override
 	public String toString() {
 		PropertyValue[] pvs = getPropertyValues();
-		StringBuilder sb = new StringBuilder("PropertyValues: length=").append(pvs.length);
 		if (pvs.length > 0) {
-			sb.append("; ").append(StringUtils.arrayToDelimitedString(pvs, "; "));
+			return "PropertyValues: length=" + pvs.length + "; " + StringUtils.arrayToDelimitedString(pvs, "; ");
 		}
-		return sb.toString();
+		return "PropertyValues: length=0";
 	}
 
 }

spring-beans/src/main/java/org/springframework/beans/factory/config/BeanDefinitionHolder.java

@@ -135,12 +135,10 @@ public class BeanDefinitionHolder implements BeanMetadataElement {
 	 * @see #getAliases()
 	 */
 	public String getShortDescription() {
-		StringBuilder sb = new StringBuilder();
-		sb.append("Bean definition with name '").append(this.beanName).append("'");
-		if (this.aliases != null) {
-			sb.append(" and aliases [").append(StringUtils.arrayToCommaDelimitedString(this.aliases)).append("]");
+		if (this.aliases == null) {
+			return "Bean definition with name '" + this.beanName + "'";
 		}
-		return sb.toString();
+		return "Bean definition with name '" + this.beanName + "' and aliases [" + StringUtils.arrayToCommaDelimitedString(this.aliases) + ']';
 	}
 
 	/**