String i="12345678";
try{
System.out.println(Integer.toBinaryString(Integer.parseInt(i)));
}catch(Exception e){}
try{
System.out.println(Integer.toBinaryString(Integer.parseInt(i)));
}catch(Exception e){}
调试欢乐多
public static String toBinaryString(int i)
Creates a string representation of the integer argument as an unsigned integer in base 2.
The unsigned integer value is the argument plus 232if the argument is negative; otherwise it is equal to the argument. This value is converted to a string of ASCII digits in binary (base 2) with no extra leading 0s. If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The characters '0' ('\u0030') and '1' ('\u0031') are used as binary digits.Parameters:
i - an integer.
Returns:
the string representation of the unsigned integer value represented by the argument in binary (base 2).
byte[] b = s.getBytes();
int[] r = new int[ b.length * 8 ];
for ( int i = 0; i < b.length; i++ ){
int t = 128;
for ( int j = 0; j < 8; j++ ){
r[ i * 8 + j] = ( ( int ) b[ i ] & t ) == 0 ? 0 : 1;
t = t >> 1;
}
}