字面量

public class data {

    public static void main(String[] args) {

        System.out.println("老鹰乐队（Eagles）");

        System.out.println("流行");      

        System.out.println("选集");           

        System.out.println("CD");

        System.out.println('3');

        System.out.println(9.8);

    }

}