JAVA: storing input into array -

I have to write a program where the program will create random characters and I will need to store this random character in the array

  four [] arrayRandom = new character [10]; {RandomNumLet = (generator.extant (20) + 1) for (int i = 0; i & lt; 8; i ++); System.out.print (array emimilarator [random name] + ""); ArrayRampatty Letter [Random Mile] = ArrayRemand [i]; }  

Is there anything wrong with my code? Because when I run it and print the array, then I get the boxes for all the values ​​in the array and there are some letters that can not print this line of code

  System.out. Print (arrayRandomLetter [randomNumLet] + "");   
 Thanks   
 
 
 You are specifying an element of  ArrayRandomLetter  from a value  arrayRandom . As you never start  arrayRandom , its values ​​are all 0. 0 is not a printable character value, so boxes are 
 
 An easy way to choose a random character is: 
 
  string characters = "ABCDEFGHJJLMNOPQRTUVX"; Four random squares = cheers. Chart (random.number (chars.length ());