Five, Sticky Bag and Half Bag Issues

\n is used as a delimiter to distinguish lines.
compact processes the data that was not fully read the first time, moving it forward and integrating it with the following content.

Incomplete data after \n in the read line is called a sticky package.
Incomplete data before /n in the read line is called a half package.

//1. Half package Sticky package
public class TestNIO10 {
    public static void main(String[] args) {
        ByteBuffer buffer = ByteBuffer.allocate(50);
        buffer.put("Hi sunshuai\nl love y".getBytes());
        doLineSplit(buffer);
        buffer.put("ou\nDo you like me?\n".getBytes());
        doLineSplit(buffer);
    }

    // Data received by ByteBuffer \n
    private static void doLineSplit(ByteBuffer buffer) {
        buffer.flip();
        for (int i = 0; i < buffer.limit(); i++) {
            if (buffer.get(i) == '\n') {
                int length = i + 1 - buffer.position();
                ByteBuffer target = ByteBuffer.allocate(length);
                for (int j = 0; j < length; j++) {
                    target.put(buffer.get());
                }

                // Truncation work completed
                target.flip();
                System.out.println("StandardCharsets.UTF_8.decode(target).toString() = " + StandardCharsets.UTF_8.decode(target).toString());
            }
        }
        buffer.compact();
    }
}