called fields, of the same or different data The File Data Structure Programming languages have a convenient data structure that facilitates the transfer of data to and from external storage. The array and record may be lovely to store a complex set of data in the memory of a computer, but this data often needs to be used at some future date. The data needs to be stored in some permanent manner. The file data structure provides this ability. File Definition A file is an internal data structure - with an unspecified number of elements of the same type - assigned to an external file name. The file data structure allows transfer of data between internal and external storage. Data Structures The three data structures - array, record and file - introduced in this section are built-in Java data types. These data types are ready to go and can be used with very little effort. Using built-in data structures is a good starting point in an introductory computer science course. There are many other types of data structures that the programmer can create for a wide variety of special purposes. The study and practice of these special user-created data structures is a major focus of most second Computer Science courses. One example of such a special data structure is the stack. The Data Structure One important data structure in computer science is the stack. This data structure will be explained, and used, in considerable detail in the future computer science courses. Right now consider the following stack definition. Definition A stack is a data structure with elements of the same type. Data elements of the stack data structure can only be accessed (stored or retrieved) at one end of the
called fields, of the same or different data The File Data Structure Programming languages have a convenient data structure that facilitates the transfer of data to and from external storage. The array and record may be lovely to store a complex set of data in the memory of a computer, but this data often needs to be used at some future date. The data needs to be stored in some permanent manner. The file data structure provides this ability. File Definition A file is an internal data structure - with an unspecified number of elements of the same type - assigned to an external file name. The file data structure allows transfer of data between internal and external storage. Data Structures The three data structures - array, record and file - introduced in this section are built-in Java data types. These data types are ready to go and can be used with very little effort. Using built-in data structures is a good starting point in an introductory computer science course. There are many other types of data structures that the programmer can create for a wide variety of special purposes. The study and practice of these special user-created data structures is a major focus of most second Computer Science courses. One example of such a special data structure is the stack. The Data Structure One important data structure in computer science is the stack. This data structure will be explained, and used, in considerable detail in the future computer science courses. Right now consider the following stack definition. Definition A stack is a data structure with elements of the same type. Data elements of the stack data structure can only be accessed (stored or retrieved) at one end of the
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