is7bit -- determine if byte array contains only 7-bit bytes.

Determine if the byte data contains any 8bit bytes (i.e. bytes with the most significant bit set).

Download Chilkat Java Library

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {

    byte[] data_bytes = { (byte)0x01, (byte)0xFF, (byte)65, (byte)66, (byte)67, (byte)0xC0, (byte)0xC1, (byte)0xC2, (byte)0x61, (byte)0x62, (byte)0x63};
    CkByteData data = new CkByteData();
    data.appendByteArray(data_bytes);

    if (data.is7bit() == true) {
        System.out.println("All bytes are between 0 and 0x7F inclusive!");
    }
    else {
        System.out.println("Some bytes are 8bit!");
    }


  }
}