The Oracle/Sun guidelines ("Code Conventions for the Java TM Programming Language") tell us to break before an operator. And they give this example.
if ((condition1 && condition2)
|| (condition3 && condition4)
||!(condition5 && condition6)) {
doSomethingAboutIt();
}
Many companies that I've worked for adopt the Oracle/Sun guidelines as the standard for their own code.
Refer http://www.oracle.com/technetwork/java/javase/documentation/codeconventions-136091.html#248