How to convert string into bits and then into int array - java

Question

How to convert string into bits(not bytes) or array of bits in Java(i will do some operations later) and how to convert into array of ints(every 32 bits turn into the int and then put it into the array? I have never done this kind of conversion in Java.

String->array of bits->(some operations I'll handle them)->array of ints

Answer 1

ByteBuffer bytes = ByteBuffer.wrap(string.getBytes(charset));
  // you must specify a charset
IntBuffer ints = bytes.asIntBuffer();
int numInts = ints.remaining();
int[] result = new int[numInts];
ints.get(result);

Answer 2

THIS IS THE ANSWER

String s = "foo";
      byte[] bytes = s.getBytes();
      StringBuilder binary = new StringBuilder();
      for (byte b : bytes)
      {
         int val = b;
         for (int i = 0; i < 8; i++)
         {
            binary.append((val & 128) == 0 ? 0 : 1);
            val <<= 1;
         }
      //   binary.append(' ');
      }
      System.out.println("'" + s + "' to binary: " + binary);