java エラー「Exception in thread “main” java.nio.file.InvalidPathException: Illegal char at index 3」が発生した場合の対処法

import java.nio.file.Path;

public class App {
    public static void main(String[] args) throws Exception {

        Path p = Path.of("C:/?/java");        
    
        System.out.println(p);

    }
}

Exception in thread "main" java.nio.file.InvalidPathException: Illegal char <?> at index 3: C:/?/java
        at java.base/sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:182)
        at java.base/sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:153)
        at java.base/sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
        at java.base/sun.nio.fs.WindowsPath.parse(WindowsPath.java:92)
        at java.base/sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:232)
        at java.base/java.nio.file.Path.of(Path.java:147)
        at App.main(App.java:6)