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int转byte[],byte[]转int

 
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public byte[] intToByte(int i) {
byte[] bt = new byte[4];
bt[0] = (byte) (0xff & i);
bt[1] = (byte) ((0xff00 & i) >> 8);
bt[2] = (byte) ((0xff0000 & i) >> 16);
bt[3] = (byte) ((0xff000000 & i) >> 24);
return bt;
}
public  static int bytesToInt(byte[] bytes) {
int num = bytes[0] & 0xFF;
num |= ((bytes[1] << 8) & 0xFF00);
num |= ((bytes[2] << 16) & 0xFF0000);
num |= ((bytes[3] << 24) & 0xFF000000);
return num;
}

    

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