cryptography - Error: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 -

i have these codes in java used encryption , decryption prince. these codes sbox , sbox inverse. whenever run program, , error message of:

exception in thread "main" java.lang.arrayindexoutofboundsexception: -1     @ prince.sinv(prince.java:146)     @ prince.encrypt(prince.java:485)     @ prince_analysis_main.main(prince_analysis_main.java:21) 

i have implemented try , catch method referring http://mcnewton.org/blog/tag/exception-in-thread-main-java-lang-arrayindexoutofboundsexception-5/ not solve problem. can know if error message caused limited memory allocation or there error of implementation?

public static long s(long x) {             long[] sbox_8bits = new long[] { 0xbb, 0xbf, 0xb3, 0xb2, 0xba, 0xbc,                 0xb9, 0xb1, 0xb6, 0xb7, 0xb8, 0xb0, 0xbe, 0xb5, 0xbd, 0xb4,                 0xfb, 0xff, 0xf3, 0xf2, 0xfa, 0xfc, 0xf9, 0xf1, 0xf6, 0xf7,                 0xf8, 0xf0, 0xfe, 0xf5, 0xfd, 0xf4, 0x3b, 0x3f, 0x33, 0x32,                 0x3a, 0x3c, 0x39, 0x31, 0x36, 0x37, 0x38, 0x30, 0x3e, 0x35,                 0x3d, 0x34, 0x2b, 0x2f, 0x23, 0x22, 0x2a, 0x2c, 0x29, 0x21,                 0x26, 0x27, 0x28, 0x20, 0x2e, 0x25, 0x2d, 0x24, 0xab, 0xaf,                 0xa3, 0xa2, 0xaa, 0xac, 0xa9, 0xa1, 0xa6, 0xa7, 0xa8, 0xa0,                 0xae, 0xa5, 0xad, 0xa4, 0xcb, 0xcf, 0xc3, 0xc2, 0xca, 0xcc,                 0xc9, 0xc1, 0xc6, 0xc7, 0xc8, 0xc0, 0xce, 0xc5, 0xcd, 0xc4,                 0x9b, 0x9f, 0x93, 0x92, 0x9a, 0x9c, 0x99, 0x91, 0x96, 0x97,                 0x98, 0x90, 0x9e, 0x95, 0x9d, 0x94, 0x1b, 0x1f, 0x13, 0x12,                 0x1a, 0x1c, 0x19, 0x11, 0x16, 0x17, 0x18, 0x10, 0x1e, 0x15,                 0x1d, 0x14, 0x6b, 0x6f, 0x63, 0x62, 0x6a, 0x6c, 0x69, 0x61,                 0x66, 0x67, 0x68, 0x60, 0x6e, 0x65, 0x6d, 0x64, 0x7b, 0x7f,                 0x73, 0x72, 0x7a, 0x7c, 0x79, 0x71, 0x76, 0x77, 0x78, 0x70,                 0x7e, 0x75, 0x7d, 0x74, 0x8b, 0x8f, 0x83, 0x82, 0x8a, 0x8c,                 0x89, 0x81, 0x86, 0x87, 0x88, 0x80, 0x8e, 0x85, 0x8d, 0x84,                 0x0b, 0x0f, 0x03, 0x02, 0x0a, 0x0c, 0x09, 0x01, 0x06, 0x07,                 0x08, 0x00, 0x0e, 0x05, 0x0d, 0x04, 0xeb, 0xef, 0xe3, 0xe2,                 0xea, 0xec, 0xe9, 0xe1, 0xe6, 0xe7, 0xe8, 0xe0, 0xee, 0xe5,                 0xed, 0xe4, 0x5b, 0x5f, 0x53, 0x52, 0x5a, 0x5c, 0x59, 0x51,                 0x56, 0x57, 0x58, 0x50, 0x5e, 0x55, 0x5d, 0x54, 0xdb, 0xdf,                 0xd3, 0xd2, 0xda, 0xdc, 0xd9, 0xd1, 0xd6, 0xd7, 0xd8, 0xd0,                 0xde, 0xd5, 0xdd, 0xd4, 0x4b, 0x4f, 0x43, 0x42, 0x4a, 0x4c,                 0x49, 0x41, 0x46, 0x47, 0x48, 0x40, 0x4e, 0x45, 0x4d, 0x44 };                return (((long)sbox_8bits[(int) ((x & 0xff00000000000000l) >> 56)] << 56) ^                     ((long)sbox_8bits[(int) ((x & 0x00ff000000000000l) >> 48)] << 48) ^                     ((long)sbox_8bits[(int) ((x & 0x0000ff0000000000l) >> 40)] << 40) ^                     ((long)sbox_8bits[(int) ((x & 0x000000ff00000000l) >> 32)] << 32) ^                     ((long)sbox_8bits[(int) ((x & 0x00000000ff000000l) >> 24)] << 24) ^                     ((long)sbox_8bits[(int) ((x & 0x0000000000ff0000l) >> 16)] << 16) ^                     ((long)sbox_8bits[(int) ((x & 0x000000000000ff00l) >>  8)] <<  8) ^                     (long)sbox_8bits[(int) (x & 0x00000000000000ffl)]);     }      public static long sinv(long x) {         long[] sboxinv_8bits = new long[] { 0xbb, 0xb7, 0xb3, 0xb2, 0xbf, 0xbd,                 0xb8, 0xb9, 0xba, 0xb6, 0xb4, 0xb0, 0xb5, 0xbe, 0xbc, 0xb1,                 0x7b, 0x77, 0x73, 0x72, 0x7f, 0x7d, 0x78, 0x79, 0x7a, 0x76,                 0x74, 0x70, 0x75, 0x7e, 0x7c, 0x71, 0x3b, 0x37, 0x33, 0x32,                 0x3f, 0x3d, 0x38, 0x39, 0x3a, 0x36, 0x34, 0x30, 0x35, 0x3e,                 0x3c, 0x31, 0x2b, 0x27, 0x23, 0x22, 0x2f, 0x2d, 0x28, 0x29,                 0x2a, 0x26, 0x24, 0x20, 0x25, 0x2e, 0x2c, 0x21, 0xfb, 0xf7,                 0xf3, 0xf2, 0xff, 0xfd, 0xf8, 0xf9, 0xfa, 0xf6, 0xf4, 0xf0,                 0xf5, 0xfe, 0xfc, 0xf1, 0xdb, 0xd7, 0xd3, 0xd2, 0xdf, 0xdd,                 0xd8, 0xd9, 0xda, 0xd6, 0xd4, 0xd0, 0xd5, 0xde, 0xdc, 0xd1,                 0x8b, 0x87, 0x83, 0x82, 0x8f, 0x8d, 0x88, 0x89, 0x8a, 0x86,                 0x84, 0x80, 0x85, 0x8e, 0x8c, 0x81, 0x9b, 0x97, 0x93, 0x92,                 0x9f, 0x9d, 0x98, 0x99, 0x9a, 0x96, 0x94, 0x90, 0x95, 0x9e,                 0x9c, 0x91, 0xab, 0xa7, 0xa3, 0xa2, 0xaf, 0xad, 0xa8, 0xa9,                 0xaa, 0xa6, 0xa4, 0xa0, 0xa5, 0xae, 0xac, 0xa1, 0x6b, 0x67,                 0x63, 0x62, 0x6f, 0x6d, 0x68, 0x69, 0x6a, 0x66, 0x64, 0x60,                 0x65, 0x6e, 0x6c, 0x61, 0x4b, 0x47, 0x43, 0x42, 0x4f, 0x4d,                 0x48, 0x49, 0x4a, 0x46, 0x44, 0x40, 0x45, 0x4e, 0x4c, 0x41,                 0x0b, 0x07, 0x03, 0x02, 0x0f, 0x0d, 0x08, 0x09, 0x0a, 0x06,                 0x04, 0x00, 0x05, 0x0e, 0x0c, 0x01, 0x5b, 0x57, 0x53, 0x52,                 0x5f, 0x5d, 0x58, 0x59, 0x5a, 0x56, 0x54, 0x50, 0x55, 0x5e,                 0x5c, 0x51, 0xeb, 0xe7, 0xe3, 0xe2, 0xef, 0xed, 0xe8, 0xe9,                 0xea, 0xe6, 0xe4, 0xe0, 0xe5, 0xee, 0xec, 0xe1, 0xcb, 0xc7,                 0xc3, 0xc2, 0xcf, 0xcd, 0xc8, 0xc9, 0xca, 0xc6, 0xc4, 0xc0,                 0xc5, 0xce, 0xcc, 0xc1, 0x1b, 0x17, 0x13, 0x12, 0x1f, 0x1d,                 0x18, 0x19, 0x1a, 0x16, 0x14, 0x10, 0x15, 0x1e, 0x1c, 0x11 };         return (((long)sboxinv_8bits[(int) ((x & 0xff00000000000000l) >> 56)] << 56) ^                   ((long)sboxinv_8bits[(int) ((x & 0x00ff000000000000l) >> 48)] << 48) ^                   ((long)sboxinv_8bits[(int) ((x & 0x0000ff0000000000l) >> 40)] << 40) ^                   ((long)sboxinv_8bits[(int) ((x & 0x000000ff00000000l) >> 32)] << 32) ^                   ((long)sboxinv_8bits[(int) ((x & 0x00000000ff000000l) >> 24)] << 24) ^                   ((long)sboxinv_8bits[(int) ((x & 0x0000000000ff0000l) >> 16)] << 16) ^                   ((long)sboxinv_8bits[(int) ((x & 0x000000000000ff00l) >>  8)] <<  8) ^                   (long)sboxinv_8bits[ (int) (x & 0x00000000000000ffl)]);     } 

an array index out of bounds exception means trying access index of array not exist.

example if array has 5 elements asking 6th element.

i'd @ sinv function calculate array indexes.