Why am I getting a java.lang.NoClassDefFoundError error?

Question

Java

I have a code that downloads songs. There he is:

try (BufferedInputStream in = new BufferedInputStream(new URL(urlStr).openStream());
                     FileOutputStream fileOutputStream = new FileOutputStream(file)) {
                    byte dataBuffer[] = new byte[1024];
                    int bytesRead;
                    while ((bytesRead = in.read(dataBuffer, 0, 1024)) != -1) {
                        fileOutputStream.write(dataBuffer, 0, bytesRead);
                    }
                } catch (IOException e) {
                    // handle exception
                }

                Mp3File mp3file = null;
                try {
                    mp3file = new Mp3File(file);
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (UnsupportedTagException e) {
                    e.printStackTrace();
                } catch (InvalidDataException e) {
                    e.printStackTrace();
                }
                if (mp3file.hasId3v1Tag()) {
                    mp3file.removeId3v1Tag();
                }
                if (mp3file.hasId3v2Tag()) {
                    mp3file.removeId3v2Tag();
                }
                if (mp3file.hasCustomTag()) {
                    mp3file.removeCustomTag();
                }
                ID3v2 id3v2Tag;
                if (mp3file.hasId3v2Tag()) {
                    id3v2Tag = mp3file.getId3v2Tag();
                } else {
                    // mp3 does not have an ID3v2 tag, let's create one..
                    id3v2Tag = new ID3v24Tag();
                    mp3file.setId3v2Tag(id3v2Tag);
                }
                id3v2Tag.setTrack("5");
                id3v2Tag.setArtist(performer);
                id3v2Tag.setTitle(title);
                id3v2Tag.setAlbum("Lalala");
                id3v2Tag.setYear("2001");
                id3v2Tag.setGenre(12);
                id3v2Tag.setArtistUrl(songImg.getText().toString());
                try {
                    id3v2Tag.setAlbumImage(recoverImageFromUrl(songImg.getText().toString()),"");
                } catch (Exception e) {
                    e.printStackTrace();
                }

So, everything works well on Android version 9, but when testing on Android 6, the following Exception crashes:

E/AndroidRuntime: FATAL EXCEPTION: Timer-2
Process: music.player.musicplayer.audio.media.fm.video.radio.video.songs.equalizer.apps.free.android.lalala.download.search, PID: 31039
java.lang.NoClassDefFoundError: Failed resolution of: Ljava/nio/file/Paths;
    at com.mpatric.mp3agic.FileWrapper.<init>(FileWrapper.java:21)
    at com.mpatric.mp3agic.Mp3File.<init>(Mp3File.java:57)
    at com.mpatric.mp3agic.Mp3File.<init>(Mp3File.java:45)
    at musicplayer.audioplayer.equalizer.mp3player.widget.TopAdapter$TopViewHolder$4.run(TopAdapter.java:292)
    at java.util.TimerThread.mainLoop(Timer.java:555)
    at java.util.TimerThread.run(Timer.java:505)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "java.nio.file.Paths" on path: DexPathList
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at com.mpatric.mp3agic.FileWrapper.<init>(FileWrapper.java:21) 
    at com.mpatric.mp3agic.Mp3File.<init>(Mp3File.java:57) 
    at com.mpatric.mp3agic.Mp3File.<init>(Mp3File.java:45) 
    at musicplayer.audioplayer.equalizer.mp3player.widget.TopAdapter$TopViewHolder$4.run(TopAdapter.java:292) 
    at java.util.TimerThread.mainLoop(Timer.java:555) 
    at java.util.TimerThread.run(Timer.java:505)

Answer 1

Have you tried searching? Google
https://stackoverflow.com/questions/23638181/nocla...