Avoid allocations from lower-casing spec in JAR Handler

Closes gh-11314

Avoid allocations from lower-casing spec in JAR Handler
Closes gh-11314
37437a0f · dreis2211 · Brian Clozel · 846e6426 · 37437a0f
Commit 37437a0f authored Dec 11, 2017 by dreis2211 Committed by Brian Clozel Dec 11, 2017
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Handler.java ...ain/java/org/springframework/boot/loader/jar/Handler.java +1 -1

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--- a/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/Handler.java
+++ b/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/Handler.java
@@ -159,7 +159,7 @@ public class Handler extends URLStreamHandler {

 	@Override
 	protected void parseURL(URL context, String spec, int start, int limit) {
-		if (spec.toLowerCase().startsWith(JAR_PROTOCOL)) {
+		if (spec.regionMatches(true, 0, JAR_PROTOCOL, 0, JAR_PROTOCOL.length())) {
 			setFile(context, getFileFromSpec(spec.substring(start, limit)));
 		}
 		else {