To me Java is a fantastic high-level language. I think a lot of people in the web world would be pleasantly surprised to re-discover it.
Python/Ruby only became popular because of Oracle licensing fees (now a non-issue thanks to alternative JVM implementations), and stayed popular because of science (you really can't beat the simplicity of Python for the sciences, people don't really want to have to fight with syntax in the science fields).
I think the only areas where Java isn't good are when you need deterministic latency (such as in a 3d renderer), or when you need a simplistic syntax that non-programmers can use.
Python/Ruby only became popular because of Oracle licensing fees (now a non-issue thanks to alternative JVM implementations), and stayed popular because of science (you really can't beat the simplicity of Python for the sciences, people don't really want to have to fight with syntax in the science fields).
I think the only areas where Java isn't good are when you need deterministic latency (such as in a 3d renderer), or when you need a simplistic syntax that non-programmers can use.