import os

# TODO: change version
java_version = "1.8.0_171"

try:
    # create alternate system
    os.system('sudo update-alternatives --install "/usr/bin/java" \
"java" "/opt/Oracle_Java/jdk{java_version}/bin/java" 1'.format(java_version=java_version))
    os.system('sudo update-alternatives --install "/usr/bin/javac" \
"javac" "/opt/Oracle_Java/jdk{java_version}/bin/javac" 1'.format(java_version=java_version))
    os.system('sudo update-alternatives --install "/usr/bin/javaws" \
"javaws" "/opt/Oracle_Java/jdk{java_version}/bin/javaws" 1'.format(java_version=java_version))
    os.system('sudo update-alternatives --install "/usr/bin/jar" \
"jar" "/opt/Oracle_Java/jdk{java_version}/bin/jar" 1'.format(java_version=java_version))

    # configure alternate system
    os.system('sudo update-alternatives --set "java" \
"/opt/Oracle_Java/jdk{java_version}/bin/java"'.format(java_version=java_version))
    os.system('sudo update-alternatives --set "javac" \
"/opt/Oracle_Java/jdk{java_version}/bin/javac"'.format(java_version=java_version))
    os.system('sudo update-alternatives --set "javaws" \
"/opt/Oracle_Java/jdk{java_version}/bin/javaws"'.format(java_version=java_version))
    os.system('sudo update-alternatives --set "jar" \
"/opt/Oracle_Java/jdk{java_version}/bin/jar"'.format(java_version=java_version))

    input("Successfull installed Oracle JDK {}. Press enter to finish...".format(java_version))
except Exception as e:
    print("Error")
    print(e.args)