謝宇哲java data type 資料型態

/*謝宇哲2022/10/24,Java data type,資料型態*/ public class Main { public static void main(String[] args) { int myNum = 5; //宣告整數integer (whole number),4位元組bytes float myFloatNum = 5.99f; //浮點數=實數,floating point number,4位元組bytes double doubleNum = 5.99d; //倍精數,8位元組,8bytes,和 long長整數 char myLetter = 'D', littlePig = 'g';/*字元character=角色,2位元組bytes=16位元bits*/ boolean myBool = true; //布林boolean,1位元bit,0或1,false or true String myText = "謝宇哲"; //字串String,非原型資料,長度變動的 System.out.println(myNum); //系統的.輸出的.列印print且換列ln=line System.out.println(myFloatNum); System.out.println(myLetter); System.out.println(myBool); System.out.println(myText); myNum = myLetter; System.out.println(myNum); myNum = littlePig; System.out.println(myNum); for (int k=1; k <10; k=k+3) System.out.print(k + " "); } }