vibhatha commented on issue #44410:
URL: https://github.com/apache/arrow/issues/44410#issuecomment-2412853936
Or...
```java
try (VarCharVector v = new VarCharVector("myvec", allocator)) {
v.allocateNewSafe();
v.set(0, new Text("Hello"));
v.set(1, new Text("World"));
v.setValueCount(2);
System.out.println("Vector");
System.out.println(v);
final ArrowBuf dataBuffer = v.getDataBuffer();
final ArrowBuf validityBuffer = v.getValidityBuffer();
final ArrowBuf offsetBuffer = v.getOffsetBuffer();
try (final ArrowBuf newDataBuffer =
allocator.buffer(dataBuffer.capacity())) {
byte[] resAtZero = new byte[20];
dataBuffer.getBytes(0, resAtZero);
for (int i = 0; i < resAtZero.length; i++) {
System.out.print(resAtZero[i] + ", ");
resAtZero[i] += 1;
}
newDataBuffer.writeBytes(resAtZero, 0, resAtZero.length);
newDataBuffer.writerIndex(dataBuffer.writerIndex());
// dataBuffer.setBytes(0, resAtZero);
newDataBuffer.readerIndex(0);
ArrowFieldNode fieldNode = new ArrowFieldNode(v.getValueCount(),
v.getNullCount());
v.loadFieldBuffers(fieldNode, List.of(validityBuffer, offsetBuffer,
newDataBuffer));
System.out.println();
System.out.println("After");
System.out.println(v);
}
/*
*
* Vector
[Hello, World]
72, 101, 108, 108, 111, 87, 111, 114, 108, 100,
After
[Ifmmp, Xpsme]
*
*/
}
```
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