Polish "Use Supplier variants of Assert methods"

Closes gh-12630

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/hazelcast/HazelcastProperties.java

@@ -52,8 +52,8 @@ public class HazelcastProperties {
 		if (this.config == null) {
 			return null;
 		}
-		Assert.isTrue(this.config.exists(), () -> "Hazelcast configuration does not exist '"
-				+ this.config.getDescription() + "'");
+		Assert.isTrue(this.config.exists(), () -> "Hazelcast configuration does not "
+				+ "exist '" + this.config.getDescription() + "'");
 		return this.config;
 	}
 

spring-boot-project/spring-boot-cli/src/main/java/org/springframework/boot/cli/command/archive/ArchiveCommand.java

@@ -124,8 +124,9 @@ abstract class ArchiveCommand extends OptionParsingCommand {
 		protected ExitStatus run(OptionSet options) throws Exception {
 			List<?> nonOptionArguments = new ArrayList<Object>(
 					options.nonOptionArguments());
-			Assert.isTrue(nonOptionArguments.size() >= 2, () -> "The name of the resulting "
-					+ this.type + " and at least one source file must be specified");
+			Assert.isTrue(nonOptionArguments.size() >= 2, () -> "The name of the "
+					+ "resulting" + this.type + " and at least one source file must be "
+					+ "specified");
 
 			File output = new File((String) nonOptionArguments.remove(0));
 			Assert.isTrue(

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/restart/classloader/ClassLoaderFile.java

@@ -56,7 +56,8 @@ public class ClassLoaderFile implements Serializable {
 	public ClassLoaderFile(Kind kind, long lastModified, byte[] contents) {
 		Assert.notNull(kind, "Kind must not be null");
 		Assert.isTrue(kind == Kind.DELETED ? contents == null : contents != null,
-				() -> "Contents must " + (kind == Kind.DELETED ? "" : "not ") + "be null");
+				() -> "Contents must " + (kind == Kind.DELETED ? "" : "not ")
+						+ "be null");
 		this.kind = kind;
 		this.lastModified = lastModified;
 		this.contents = contents;