Ao tentar configurar o hsqldb ocorre erro:
PS C:\Developer\RedHat\workspace\loja-virtual> java -cp hsqldb.jar org.hsqldb.server.Server --database.0 file:loja-virtu
al --dbname.0 loja-virtual
Exception in thread "Main Thread" java.lang.UnsupportedClassVersionError: org/hsqldb/server/Server : unsupported classve
rsion 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.hsqldb.server.Server. Program will exit.
PS C:\Developer\RedHat\workspace\loja-virtual>