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One way to do it would be as follows:
* Read the entire file to a String variable
* Write the data before the insertion point
* Write the data to be inserted
* Write the data after the insertion point
Probably the following would be more efficient:
* Read the part of the file after the insertion point, to a String variable
* Write the data to be inserted
* Write the data after the insertion point
Perhaps some classes have methods that can automate this, from the point of view of the programmer. But if you want to INSERT something, it's unavoidable to have the overhead of reading the data after the insertion point, and writing it back again. This assumes you use a text file; when working with a database, there are other, usually more efficient, options.
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∙ 8y ago
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