1. 用System.out.println。如

public?class?HelloWorld{
????public?static?void?main(String[]?args)?{
????String?muke="我愛慕課網";
????String?wangzhi="www.xianlaiwan.cn";
????System.out.println(muke);
????System.out.println(wangzhi);
???}
}

2.用轉義符\n。如

public?class?HelloWorld{
????public?static?void?main(String[]?args)?{
	String?a?="我愛慕課網";
????????String?b?="www.xianlaiwan.cn";
????
????System.out.println(a+"\n"+b);
	}
}

這里好像是網站做了限制，變成了一行了，你在本地運行下吧，會換行滴~~~