Byte[] The conversion between an array and an int

Here's a simple way to record the two conversions:

The first type:

1, int and byte[] conversion (similar to the byte Short,long type)

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2. /**
4. * Converts an int value to a byte array of four bytes, this method applies to the order of (low in front, high in the rear). Compatible with Bytestoint ()
6. * @param value
8. * int value to convert
10. * @return byte array
12. */
14. Public static byte[] Inttobytes ( int value)
16. {
18. byte[] src = new byte[4];
20. src[3] = (byte) ((value>>) & 0xFF);
22. src[2] = (byte) ((value>>) & 0xFF);
24. src[1] = (byte) ((value>>8) & 0xFF);
26. src[0] = (byte) (Value & 0xFF);
28. return src;
30. }
32. /**  
34. * Converts an int value to a byte array of four bytes, this method applies to the order (high in front, low in the back). Compatible with BytesToInt2 ()
36. */
38. Public static byte[] IntToBytes2 (int value)
40. {
42. byte[] src = new byte[4];
44. src[0] = (byte) ((value>>) & 0xFF);
46. src[1] = (byte) ((value>>) & 0xFF);
48. src[2] = (byte) ((value>>8) &0xFF);
50. src[3] = (byte) (Value & 0xFF);
52. return src;
54. }

byte[] Turn int

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2. /**
4. * Byte array to take an int value, this method applies to (low in front, high in the back) order, and Inttobytes () supporting the use of
6. *
8. * @param src
10. * Byte array
12. * @param offset
14. * Starting from the offset bit of the array
16. * @return int value
18. */
20. Public static int bytestoint (byte[] src, int offset) {
22. int value;
24. Value = (int) ((Src[offset] & 0xFF)
26. | ((src[offset+1] & 0xFF) <<8)
28. | ((src[offset+2] & 0xFF) <<
30. |  ((src[offset+3] & 0xFF) <<24));
32. return value;
34. }
38. /**  
40. * The byte array takes an int value, this method is applied to the order (low in the back, high in front). Compatible with IntToBytes2 ()
42. */
44. Public static int BytesToInt2 (byte[] src, int offset) {
46. int value;
48. Value = (int) (((Src[offset] & 0xFF) <<
50. | ((src[offset+1] & 0xFF) <<
52. | ((src[offset+2] & 0xFF) <<8)
54. |  (src[offset+3] & 0xFF));
56. return value;
58. }

The second type:

1, int and byte[] conversion (similar to the byte Short,long type)

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2. /**  
4. * Converts an int value to a byte array of four bytes, this method applies to the order of (low in front, high in the rear).
6. * @param value
8. * int value to convert
10. * @return byte array
12. */
14. Public static byte[] Inttobytes (int value)
16. {
18. byte[] byte_src = new byte[4];
20. byte_src[3] = (byte) ((Value & 0xff000000) >>24);
22. byte_src[2] = (byte) ((Value & 0x00ff0000) >>16);
24. byte_src[1] = (byte) ((Value & 0x0000FF00) >>8);
26. byte_src[0] = (byte) ((Value & 0x000000ff));
28. return BYTE_SRC;
30. }

byte[] Turn int

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2. /**  
4. * The byte array takes an int value, this method is applied to the order (low in front, high in the rear).
6. *
8. * @param ary
10. * Byte array
12. * @param offset
14. * Starting from the offset bit of the array
16. * @return int value
18. */
20. Public static int bytestoint (byte[] ary, int offset) {
22. int value;
24. Value = (int) ((ary[offset]&0xFF)
26. | ((ary[offset+1]<<8) & 0xff00)
28. | ((ary[offset+2]<<) & 0xFF0000)
30. |  ((ary[offset+3]<<) & 0xff000000));
32. return value;
34. }

Byte[] The conversion between an array and an int