Class not found exception "java.time.temporal.TemporalField" when connecting to jdbc:postgresql from Matlab - postgresql

Question

I'm trying to connect to a PostgreSQL database from Matlab. This is my code:
javaclasspath('/usr/share/java/postgresql-jdbc4.jar');
properties = java.util.Properties;
properties.setProperty('user', '********');
properties.setProperty('password', '********');
driver = org.postgresql.Driver;
url = 'jdbc:postgresql://127.0.0.1:5432/DBNAME';
connection = driver.connect(url, properties)
I get the following exception:
Error using org.postgresql.Driver/connect
Java exception occurred:
java.lang.NoClassDefFoundError: java/time/temporal/TemporalField
at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:322)
at org.postgresql.Driver.makeConnection(Driver.java:404)
at org.postgresql.Driver.connect(Driver.java:272)
Caused by: java.lang.ClassNotFoundException: java.time.temporal.TemporalField
<SNIP>
I'm running Matlab R2012a on Debian. Everything was installed from the testing repository. Java is openjdk version "1.8.0_144" and PostgreSQL is 9.6.5-1.

Answer 1

It seems you don't use the jdk 1.8.
See same topic
Could you try to execute java -version to be sure?
[edit]
This error happens because Matlab 2012 does not use Java 8. To confirm, run this in the Matlab shell, not in your system terminal:
java -version
It is posible to make Matlab use a different JDK, but this can cause more problems than it solves. The better solution is to get the PostgreSQL JDBC 4.0, which is suitable for Java 6.
Direct link: https://jdbc.postgresql.org/download/postgresql-42.1.4.jre6.jar