how can you check the length of if an array with is a class field?

 Array.getLength(?) doesn't seem to be working for me
~
 Here is a piece of demo code I quickly scratch
~
import java.util.*;
import java.lang.reflect.*;

// __
class KAI{
 public String a;
 public int i;
 public long[] lAr;
 public byte[] bAr;
}

// __
class KAX{
 private String a00;
 private final String a04 = "04";
 private final int[] iAr = new int[]{0, 1, 2};

 public long l00;
 public String[][] sSAr = new String[][]{{"a","b"},{"0","1","2"}};
 public ArrayList<String> ALS;
 KAI[] KAIAr = new KAI[2];
}

// __
class KFlds00{
 KFlds00(){}

// __
 public void printKFieldsAttrs(Object Obj){
// __
  try{
   Field Flds[] = (Obj.getClass()).getDeclaredFields();
   for (int j = 0; j < Flds.length; ++j){
    Flds[j].setAccessible(true);
    System.out.println("// __ Flds[" + j + "]: |" + Flds[j].getName()
+ "|, |" + Flds[j].getModifiers() + "|" +
Modifier.toString(Flds[j].getModifiers()) + "|" +
Flds[j].getDeclaringClass() + "|");
// __
    Class KTp = Flds[j].getType();
    if (KTp.isArray()) {
     Class CompTp = KTp.getComponentType();
     System.out.println("// __ Array of: |" + CompTp + "|");
     System.out.println("// __ isPrimitive: |" + CompTp.isPrimitive()
+ "|");

// System.out.println("// __ Array size: |" + Array.getLength(?) +
"|");
    }
    else{
     System.out.println("// __ " + KTp + "|" + Flds[j].get(Obj) +
"|");
    }
   }
  }catch(InstantiationException InstX){ InstX.printStackTrace(); }
    catch(IllegalAccessException IlgAxX){ IlgAxX.printStackTrace(); }
// __
 }
}

// __
public class KFlds00Test{
 public static void main(String[] aArgs){
  KAI K = new KAI();
  KFlds00 KFlds = new KFlds00();
  KFlds.printKFieldsAttrs(K);
// __
  KAX KX = new KAX();
  KFlds.printKFieldsAttrs(KX);
 }
}