why java is more secure?

1.No use of pointers

         C/C++ language uses pointers, which may cause unauthorized access to memory blocks when other programs get the pointer values. Unlike conventional C/C++ language, Java never uses any kind of pointers. Java has its internal mechanism for memory management. It only gives access to the data to the program if has appropriate verified authorization.

2.Byte code is the thing that makes Java more secure

       Every time when a user compiles the Java program, the Java compiler creates a class file with Bytecode, which are tested by the JVM at the time of program execution for viruses and other malicious files.

1          no readability i.e., contains byte code understandable to only JVM.No virus will infect the byte code. Even if the virus entered into byte code the jvm doesn't understand it, so jvm keeps these instructions as it is. No executable code will be generated to this virus.