稍后在Java中修改ByteArrayOutputStream .write值

Question

有什么方法可以稍后在代碼中更改ByteArrayOutputStream .write的值嗎？ （請注意以下代碼中的注釋）

類似的東西：

public class test {
    public static int val;
    public static void main(String args[]) {

        ByteArrayOutputStream outgoingStream = new ByteArrayOutputStream();
        outgoingStream.write(1);
        outgoingStream.write(92);
        val = 23;
        outgoingStream.write(val);
        outgoingStream.write(34);
        val = 69;


        byte[] bytes = outgoingStream.toByteArray();

        ByteArrayInputStream in = new ByteArrayInputStream(bytes);

        for(int i = 0; i<bytes .length;i++) {
            //Outputs 1 92 23 34 but I need it as 1 92 69 34
            System.out.println(in.read());
        }   
    }

}

Answer 1

您應該使用另一種版本的write方法和寫入字節的地址起點，然后替換：

public void write(byte []b, int of, int len)
Writes len number of bytes starting from offset off to the stream.