首先按照命名規(guī)范 你的類名首字母要大寫 應(yīng)該是HelloWorld

出現(xiàn)錯(cuò)誤的是main函數(shù)里面的參數(shù)，應(yīng)該是String[] args

public?class?HelloWorld{
????public?static?void?main(String?[]?args){
????????String?san="我愛慕課網(wǎng)";
????????String?uzi="idcbgp.cn?";
????????System.out.println(san);
????????System.out.println(uzi);
????}
}

正確代碼如上，自己對(duì)比