Install libpulse-jni by entering the following commands in the terminal:
sudo apt update sudo apt install libpulse-jni
Description:
PulseAudio sound driver for Java (JNI libraries)
IcedTea implementation of javax.sound.sampled.spi.MixerProvider using PulseAudio as a mixer. . This package contains the architecture specific Java native interface part.
Homepage: http://icedtea.classpath.org
Version: 2.4.7-1
Section: universe/java