How a CT system works. 1  A motorized table moves the patient (Figure 3) through a circular opening in the CT imaging system. 2  As the patient passes through the CT imaging system, a source of x rays rotates around the inside of the circular opening. A single rotation takes about 1 second.
Static blocks are mainly used for initialization of static variables of class which you can't do with the help of constructors. Here are some rules which governs functioning of static blocks:-. 1) They are called when a class is loaded into the JVM. 2) They are executed in the order which they appear in the class. 3) They are executed only once. 4) They are used as class level members only - which means you CANNOT put them inside any methods.
Static linking is the result of the linker copying all library routines used in the program into the executable image. This may require more disk space and memory than dynamic linking, but is both faster and more portable, since it does not require the presence of the library on the system where it is run. Dynamic linking is accomplished by placing the name of a sharable library in the executable image. Actual linking with the library routines does not occur until the image is run, when both the executable and the library are placed in memory. An advantage of dynamic linking is that multiple programs can share a single copy of the library.