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c++ vs java

No.	Topic	C++	Java
1	Platform Independence	C++ is platform dependent.	Java is platform-independent.
2	Compiler & Interpreter	C++ is a compiled language.	Java is a compiled as well as an interpreted language.
3	Source Code & Class Relationship	No strict relationship with class names and filenames.	Enforces strict relationship between the class name and filename.
4	Concept	Write once compile anywhere.	Write once run anywhere & everywhere.
5	Compatibility With Other Languages	Compatible with C except for object-oriented features.	The syntax is taken from C/C++. No backward compatibility with any other language.
6	Type of Programming Language	Procedural and object-oriented.	Object-oriented.
7	Library Interface	Allows direct calls to native system libraries.	Calls only through Java Native interface and Java Native Access.
8	Root Hierarchy	No root hierarchy.	Follows single root hierarchy.
9	Distinguishing Features	Supports procedural as well as object-oriented features.	No destructors. Automatic garbage collection.
10	Portability	C++ code is not portable.	Java is portable.
11	Type Semantics	Consistent between primitive and object types.	Not consistent.
12	Input Mechanism	Cin and Cout are used for I/O.	System.in and System.out.println
13	Access Control and Object Protection	A flexible object model and consistent protection.	The object model is cumbersome and encapsulation is weak.
14	Memory Management	Manual	System-controlled.
15	Multiple Inheritance	Present	Absent
16	Goto Statement	Supports Goto statement.	Does not support the goto statement.
17	Scope Resolution Operator	Present	Absent
18	Try/Catch Block	Can exclude try/catch block.	Cannot exclude if the code is supposed to throw an exception.
19	Overloading	Supports operator and method overloading.	Does not support operator overloading.
20	Virtual Keyword	Supports virtual keyword which facilitates overriding.	No virtual keyword, all non-static methods are by default virtual and can be overridden.
21	Runtime Error Detection	Left to programmer.	System responsibility
22	Language Support	Used mainly for system programming.	Mainly used for application programming.
23	Data and Functions	Data and Function exist outside class. Global and namespace scopes are supported.	Data and Functions are present only inside the class, package scope is available.
24	Pointers	Supports pointers.	Only limited support for pointers.
25	Structures & Unions	Supported	Not supported
26	Object Management	Manual object management with new and delete.	Automatic object management using garbage collection.
27	Parameter Passing	Supports call by value and call by reference.	Supports only call by value.
28	Thread Support	Thread support is not very strong, it relies on the third party.	Very strong thread support.
29	Hardware	Nearer to the hardware.	Not very interactive with hardware.
30	Documentation Comment	Does not support documentation comment.	Supports documentation comment(/*…/) that creates documentation for Java source code.