(Solved) : Java Command Patterns Simple Editor Application Consists Two Files Testeditorjava Document Q26596328 . . . .

[Java] [Command Patterns]

The simple editor application consists of two files:TestEditor.java and Document.java.

incomplete code:drive.google.com/drive/folders/1tH8H5xjlCUaGC7_cpw7lgyY0l5zSnxWf?usp=sharing​

1. Modify this editor so you can undo/redo actions. You willprobably need an invoker.

2. Implement a parametrized multi-level undo / redo

myDocument.Write(“Hey I just metyou”);

myDocument.Write(“And this iscrazy”);

myDocument.Write(“But here’s mynumber”);             

myDocument.Undo(0);

System.out.println(myDocument.Read());

Will give the following output:

—- Contents of: callmemaybe —-

0:And this is crazy

1:But here’s my number

and

myDocument.Write(“Hey I just metyou”);

myDocument.Write(“And this iscrazy”);

myDocument.Write(“But here’s mynumber”);

myDocument.Undo(2);

System.out.println(myDocument.Read());

The following output:

—- Contents of: callmemaybe —-

0:Hey I just met you

1:And this is crazy

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