java

The input to all the programs MUST be read from a file and NOT from command line unless specified. A command line should specify asking for the input file name for all the programs. 1. Implement insertion, deletion and search for a doubly- linked list as defined in class. The input has a list of pairs of an integer key followed with an operation delimited by spaces. An example of input file contents would look like 1.in 3. in 5. in 3. del 2.in 1.sch. There are a total of 3 operations in the input file given: 1. in operation: Insertions to the doubly-linked list are to be performed at the head unless otherwise specified. Duplicate insertions are to be rejected and DUPLICATE KEY should be output to the console. 3.in - Insert node with value 3 at the head of the list 5.in_8 - Insert node with value 5 between the node with value 8 and the next node. If the node with value 8 is a tail node, insert at the end. 2. del operation: Delete the node with the value of the integer key as specified. 6. del - Delete the node that has value 6 in the doubly linked list. If no such node exists, ignore the command. 3. sch operation: Search for the node with the value of the integer key as specified. If such a node exists, output FOUND to the console, else NOT FOUND. 2.sch - Search for a node with value 2 in the doubly linked list. If present output FOUND to the console. If not, output NOT FOUND to the console. Output: The list before operation and the list after operation displayed on the screen standard outout (not into a file) Example: Input file contents: 1. in 3. in 5.in 3. del 2.in 1. sch 4.in 5 Output of the program should look like: Operation: 1.in List before: NULL List after: 1 Operation: 3.in List before: 1 List after: 3 -> 1 Operation: 5.in List before: 3 -> 1 List after: 5 -> 3 -> 1 Operation: 3. del List before: 5 -> 3 -> 1 List after: 5 -> 1 Operation: 2.in List before: 5 -> 1 List after: 2 -> 5 -> 1 Operation: 1.sch FOUND Operation: 4.in 5 List before: 2 -> 5 -> 1 List after: 2 -> 5 -> 4 -> 1