Java 相当于 memcpy 将 char[] 变短

Java equivalent of memcpy'ing a char[] to short

在 Java 或 Kotlin 中,以下 C++ 代码的等价物是什么:

char* data = new char[size]; 
//read file to this array

short version = 0;
memcpy(&version, data, 2);

我试过这个:

//java equivalent of the kotlin code below
Integer.parseInt(String(Arrays.copyOfRange(data, 0, 2)))

//kotlin:
data.copyOfRange(0, 2).concatToString().toInt()

但是没用。

ByteBuffer 也不能正常工作:

data[0] is 14
data[1] is 0
ByteBuffer.wrap(data).getShort() is 3584, memcpy is 14

data[2] is -28
data[3] is 45
data[4] is 0
data[5] is 0
ByteBuffer.wrap(data).getInt(2) is -466812928, memcpy is 11748

尝试使用 ByteBuffer:

byte[] data = new byte[size];
ByteBuffer buffer = ByteBuffer.wrap(data);
short version = buffer.getShort();

如果需要,您还可以更改字节顺序