9.28

public class aaa{

static String s1 = "hello,";
static String s2 = "gay!";
public static void main(String[] args){
System.out.println(s1);
System.out.println(s2);
byte b = 100;
System.out.println("b = " + b);

short s = 200;
System.out.println("s = " + s);

int i = 4;
System.out.println("i = " + i);

float f = 44.5f;
double d = 5.5d;

System.out.println("total = " + ( b + s + i + f + d));

char c2 = 'a';
System.out.println("c2 = '\\n" + c2);

char c = 80;
System.out.println("c = " + c);

boolean zhen = true,jia = false;
System.out.println("zhen = " + zhen);
System.out.println("jia = " + jia);

final double DOUBLE = 3.1415926d;
System.out.println("DOUBLE = " + DOUBLE);

}
}