Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, we recommend utilizing android-latest-release instead of aosp-main. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP.

FixedByteArrayOutputStream

public class FixedByteArrayOutputStream
extends Object

java.lang.Object
↳	com.android.tradefed.util.FixedByteArrayOutputStream

An in-memory ERROR(/OutputStream) that only keeps a maximum amount of data.

This is implemented by keeping a circular byte array of fixed size.

Not thread safe.

Summary

Public constructors
`FixedByteArrayOutputStream(int maxDataSize)` Creates a `FixedByteArrayOutputStream`.

Public methods
`InputStream`	`getData()` Gets a InputStream for reading collected output.
`long`	`size()`
`void`	`write(byte[] b, int off, int len)`
`void`	`write(int data)`

Public constructors

FixedByteArrayOutputStream

public FixedByteArrayOutputStream (int maxDataSize)

Creates a FixedByteArrayOutputStream.

Parameters
`maxDataSize`	`int`: the approximate max size in bytes to keep in the output stream

Public methods

getData

public InputStream getData ()

Gets a InputStream for reading collected output.

Not thread safe. Assumes no data will be written while being read

Returns
`InputStream`

size

public long size ()

Returns
`long`	the number of bytes currently stored.

write

public void write (byte[] b, 
                int off, 
                int len)

Parameters
`b`	`byte`
`off`	`int`
`len`	`int`

write

public void write (int data)

Parameters
`data`	`int`