Java vs C

Java is much faster than Python in terms of speed of execution but slower than C++ . Every bit of code(variables and functions) has to be inside the class itself. Python has a huge set of libraries and modules. Code length is lesser than Java, around 1.5 times less.

On real world and real application C++ is still usually faster than java , mainly because of lighter memory footprint that result in better cache performance.7 Kas 2011

Java is easier to learn and use because it’s high level, while C can do more and perform faster because it’s closer to machine code.

When it comes to system programming and/or other low-level applications, C++ is more powerful . Some people might argue that having automatic GC collections, no pointers, no multiple inheritances make Java more powerful. But when it comes to speed, C++ is powerful.