package hjsg;public class fff {    public static void main(String[] args) {        System.out.println("hello");        byte mybyte=121;        System.out.println("mybyte=124");        short myshort=2456;        System.out.println(myshort);            int myint=123654;    long mylong=313131352123L;        System.out.println(mybyte+myshort*myint*mylong)    ;    float myfloat=3.25642f;    double d1=125.321;    char mychar='a'    ;    System.out.println(mychar);    double result=mybyte+myshort+myint+mylong+myfloat+d1;    System.out.println(result);        char mychar2=97;    System.out.println(mychar2);    System.out.println("今天学了数据类型\n我很高兴");    System.out.println("今天学了数据类型\r我很高兴");    boolean good=true;    boolean bad=false;    System.out.println(good);    final int fist=1;    System.out.println(fist);                    }}