The Collections class provides static APIs to generate read-only orunmodifiable collections, lists, sets, or maps from specified entities. For instance, if you are sure that the ArrayList you’ve made should
Use the java.lang.Runtime run a program in a separate process.Here
When you are typecasting and using instanceof keyword in Java, there are several things you should keep in mind. Consider the following example program: class Point { int x, y;
Following are some tips for matching the most commonly used data structures with particular needs.1. When to use a Hashtable?A hashtable, or similar data structures, are good candidates if the
The java.net.HttpURLConnection class provides HTTP specific functionality. First you need to open an HttpURLConnection: URL url = new URL(
By using MACRO definitions, you can easily write lines of code that are only included in Debug versions and not in Release versions. For instance, if you create a function
Some programmers believe that int a[] and int * a are equivalent.Also some C++ books to say that pointers and arrays are almost same. This belief usually leads to hard
For example the following code is incorrect: const char *foo(){ char buf[1024]; strcpy(buf,
If you have coded a template class and use it from VC++, you will get a LNK2001 error message on template member functions. This is because Microsoft deviates a bit