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public class UTFValidation {

public boolean validUtf8(int[] data) {

for (int i = 0; i < data.length; ) {

int n = data[i], size;

if (n >>> 7 == 0) {

size = 1;

} else if (n >>> 5 == 0x6) {

size = 2;

} else if (n >>> 4 == 0xe) {

size = 3;

} else if (n >>> 3 == 0x1e) {

size = 4;

} else {

return false;

}

if (i + size > data.length) {

return false;

}

for (i++, size--; size > 0; size--, i++) {

if (data[i] >>> 6 != 2) {

return false;

}

}

}

return true;

}

}