To quote Bjarne Stroustrup, "Multiple inheritance is like a parachute. Most of the time you don't need it, but when you do need it, you really need it." In the early days of C++, before templates ...

Java’s single inheritance limitation is usually not a problem in the normal course of development. In fact, the need to use multiple inheritance could be a sign of a bad design.

Java’s interface language feature confuses many Java newbies. Many mistakenly assume that interfaces only sidestep Java’s failure to support multiple implementation inheritance.