CSharp and JAVA are two different Object Oriented Languages , both have some similarities and differences also . The Csharp and JAVA derived from their own single ancestor Class "Object". All Classes in C# are descended from System.Object Class and in JAVA all classes are subclasses of java.lang.Object Class.

Both C# and JAVA have their own runtime environments . C# source codes are compiled to Microsoft Intermediate Language (MSIL) and during the execution time runs it with the help of runtime environments - Common Language Runtime (CLR). Like that JAVA source codes are compiled to Java Byte Code and during the execution time runs it with the help of runtime environments - Java Virtual Machine (JVM). Both CSharp and JAVA supports native compilation via Just In Time compilers.

More over both C# and JAVA have their own Garbage Collector. In the case of keywords comparison some keywords are similar as well as some keywords are different also. The following are the examples of few similar and different keywords.

Similar Keywords examples

class , new , if , case , for , do , while , continue , int , char , double , null