Java File I/O

The following examples provide the commonly used functions Java I/O provides. They have been fully tested and can be used directly.

• I/O Class Hierarchy Diagram
• Create a file/directory
• Read a file line by line
• Write to a file
• Append/Add something to a file
• FileOutputStream vs FileWriter
• Java: convert a file to a string
• Transfer content from one file to another
• Java: convert a file to a byte array, then convert byte array to a file.
• Java: convert image to byte array, convert byte array to image