Hello World!It's been nice knowing you.Goodbye world!
System.out.println("Hello World!\nIt's been nice knowing you.\nGoodbye world! "); 或者 System.out.println("Hello World!"); System.out.println("It's been nice knowing you."); System.out.println("Goodbye world!");
class Example { public static void mian(String []args) { System.out.println("Hello World!"); System.out.println("It's been nice knowing you."); System.out.println("Goodbye world!"); } }//这样写正确不?
");
或者
System.out.println("Hello World!");
System.out.println("It's been nice knowing you.");
System.out.println("Goodbye world!");
{
public static void mian(String []args)
{
System.out.println("Hello World!");
System.out.println("It's been nice knowing you.");
System.out.println("Goodbye world!");
}
}//这样写正确不?
你应该学着用上午老师讲的方法,比如用一个StringBuffer ,你可以先打印Helle,然后用StringBuffer的insert方法,即:StringBuffer s2=new StringBuffer("It's been you.");
System.out.println(s2.insert(9, "nice knowing"));
上午讲的还有Vector,String等,你可以学着用的。