public class HelloWorld {
public static void main(String[] args) {
int age=25;
if(age>60){
System.out.println("老年");
}else if(age>40 && age<60){
System.out.println("中年");
}else if(age>18 && age<40){
System.out.println("少年");
}else{
System.out.println("童年");
}
}
}
输出:少年;