What is the range of byte data type in Java?

What is the range of byte data type in Java?

2) Which of the following are legal lines of Java code?

int w = (int)888.8;
 
 byte x = (byte)100L; 
 long y = (byte)100; 
  
 byte z = (byte)100L;

3) Which of the following is not provided by BigDecimal?

4) If we try to add Enum constants to a TreeSet, what sorting order will it use?

5) What is the output of this program?

class mainclass {
         public static void main(String args[])
          {
             boolean var1 = true;
 	    boolean var2 = false;
 	    if (var1)
 	      System.out.println(var1);
 	    else
 	        System.out.println(var2);
        }
      }