public?class?Int_String_Char?{
????public?static?void?main(String[]?args)?{
????????byte?a1=2;
????????short?a2=2;
????????int?a3=1;
????????long?a4=2L;
????????System.out.println(getType(a1));
????????System.out.println(getType(a2));
????????System.out.println(getType(a3));
????????System.out.println(getType(a4));
????????
????????float?f=1.00f;
????????double?d=1.00d;
????????System.out.println(getType(f));
????????System.out.println(getType(d));
????????
????????boolean?b=true;
????????System.out.println(getType(b));
????????
????????char?c='a';
????????System.out.println(getType(c));
????????
????????String?s="abc";
????????System.out.println(getType(s));
????}
????
????private?static?String?getType(Object?a)?{
????????return?a.getClass().toString();
?
????}
}

運行結果:
class java.lang.Byte
class java.lang.Short
class java.lang.Integer
class java.lang.Long
class java.lang.Float
class java.lang.Double
class java.lang.Boolean
class java.lang.Character
class java.lang.String

以上就是動力節點java培訓機構的小編針對“Java查看獲取變量的數據類型”的內容進行的回答，希望對大家有所幫助，如有疑問，請在線咨詢，有專業老師隨時為你服務。