There are probably millions of corporate projects written in Java. One of the reasons Oracle bought Sun Microsystems (who invented Java) was because Oracle itself had written so much middleware crap in Java.

Both Java and C#/.NET are super-popular in Enterprise land, with the choice between them mainly being if the enterprise is a Microsoft shop or not.

Everything SAP touches is written in Java too, and it's boring old payroll stuff. There's the entire Android user interface with millions of Java-only app developers.

Oracle may well be in bed with the spooks, but it's not a Java-specific thing.