Replace FileNotFoundException in FileBuilderImpl with NoSuchFileException

This keeps the exception handling consistent with the handling used elsewhere,
since this API relies on the NIO API rather than the IO API for file system
access.

Author: ascopes

java-compiler-testing/src/main/java/io/github/ascopes/jct/workspaces/impl/FileBuilderImpl.java

@@ -22,13 +22,13 @@
 import java.io.BufferedInputStream;
 import java.io.ByteArrayInputStream;
 import java.io.File;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URL;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
 import java.nio.file.OpenOption;
 import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
@@ -101,7 +101,7 @@ public ManagedDirectory copiedFromClassPath(ClassLoader classLoader, String reso
     return uncheckedIo(() -> {
       try (var input = classLoader.getResourceAsStream(resource)) {
         if (input == null) {
-          throw new FileNotFoundException("classpath:" + resource);
+          throw new NoSuchFileException("classpath:" + resource);
         }
 
         return createFile(input);