fix: fixed NPE when running as a native image

quintesse · quintesse · commit bdf150c7ceaf · 2025-10-30T16:54:43.000+01:00
Fixes #87
diff --git a/src/main/java/dev/jbang/devkitman/JdkManager.java b/src/main/java/dev/jbang/devkitman/JdkManager.java
@@ -601,7 +601,11 @@ public void removeDefaultJdk() {
 	}
 
 	public boolean isCurrentJdkManaged() {
-		Path currentJdk = Paths.get(System.getProperty("java.home"));
+		String jh = System.getProperty("java.home");
+		if (jh == null) {
+			return false;
+		}
+		Path currentJdk = Paths.get(jh);
 		return providers(JdkProvider.Predicates.canUpdate)
 			.anyMatch(p -> p.getInstalledByPath(currentJdk) != null);
 	}

Original file line number	Diff line number	Diff line change
`@@ -601,7 +601,11 @@ public void removeDefaultJdk() {`
`601`	`601`	`}`
`602`	`602`
`603`	`603`	`public boolean isCurrentJdkManaged() {`
`604`		`- Path currentJdk = Paths.get(System.getProperty("java.home"));`
	`604`	`+ String jh = System.getProperty("java.home");`
	`605`	`+ if (jh == null) {`
	`606`	`+ return false;`
	`607`	`+ }`
	`608`	`+ Path currentJdk = Paths.get(jh);`
`605`	`609`	`return providers(JdkProvider.Predicates.canUpdate)`
`606`	`610`	`.anyMatch(p -> p.getInstalledByPath(currentJdk) != null);`
`607`	`611`	`}`