The specification of CharBuffer [1] states:

"The methods defined by CharSequence operate relative to the current position of the buffer when they are invoked."

The method CharBuffer.getChars [2] is however specified to be an

"Absolute bulk get method. "

and interprets the source index parameters to be absolute. The implementation is consistent with this.

To adhere to the previously existing specification, the getChars method should be specified to be a

"Relative bulk get method. "

and the implementation modified accordingly.

[1] https://docs.oracle.com/en/java/javase/24/docs/api/java.base/java/nio/CharBuffer.html
[2] https://download.java.net/java/early_access/jdk25/docs/api/java.base/java/nio/CharBuffer.html#getChars(int,int,char%5B%5D,int)