public class dome {
public static void main(String[] args) {
//大小写十分敏感
String la = “hudi”;
String Aa = “hudi”;
String _a = “hudi”;
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a = "hudi"; //==================================================== System.out.println(la); System.out.println(_a); System.out.println(
a="hudi";//====================================================/∗多行注释∗//∗∗∗文档注释∗/System.out.println(la);System.out.println(a);System.out.println(a);
System.out.println(Aa);
//变量
String 王者荣耀 =“最强王者”;
String 王者荣耀2 =“倔强青铜”;
System.out.println(王者荣耀);
}
}
java所有的组合都需要名字，类名，变量名以及方法名，都被称为标识符
