public class HelloWorld{
public static void main(String[] args){
System.out.println("HelloWorld");
}
}
public class ValueDemo1{
public static void main(String[] args){
System.out.println(666);
System.out.println(-777);
System.out.println(1.93);
System.out.println(-3.71);
System.out.println("景城数据");
System.out.println("benph");
System.out.println('男');
System.out.println('女');
System.out.println(true);
System.out.println(false);
System.out.println("null");
}
}
public class ValueDemo2{
public static void main(String[] args){
System.out.println("name" + '\t' + "age");
System.out.println("tom" + '\t' + "23");
}
}