D11117235catian

/*黃柏諺2022/10/24JJava 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; // floating point number,4位元組bytes double doubleNum = 5.99d; //倍精數,8位元,8bytes,和 long常整數 char myLetter = 'D', littlepig= 'd'; // 字元character=角色,2位元組bytes=16位元bits boolean myBool = true; // 布林boolean1ean,1位元bit,0或1,false or true String myText = "黃柏諺"; // 字串String,非原形資料,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 /*黃柏諺2022/10/24JJava 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 myFloa...

style>/*CSS註解和Java,JavaScript,定義h1風格,diameter直徑*/ h1{border: red solid 10px; padding: 10px; border-radius: 30px; text-align: center; background-color: blue; color: white;} Java迴圈,字串String /* 黃柏諺2022/10/17,w3shools學習,for迴圈loop */ public class Main { public static void main(String[] args) { int i, j, k=10; /*宣告整數integer i,j,k*/ String a="放屁", b="列:"; /*宣告字串a,b且設定初值="放屁"*/ a ="第"; for ( i = 10; i > 0; i--) {/*迴圈一次增加1, i=i+1可用i++執行*/ System.out.print(a+i+b); /*系統System的.out輸出.println列印,line列*/ for ( j = 0; j <= i; j++)/*迴圈內僅有一指令,可以不用{....}*/ System.out.print(j); /*系統System的.out輸出.print列印*/ System.out.println(); /*純粹換line換列*/ } } } 挪威w3schools學習Java(甲骨文Oracle公司維護)截圖 Java試探統一碼UNICODE /* 黃柏諺2022/10/17,w3shools學習,for迴圈loop */ public class Main { public static void main(String[] args) { int i, j, k=10; /*宣告整數integer i,j,k*/ String a="放屁...

/* 使用網路程式庫 */ 台灣平均每人GDP的時間序列 w3schools範例:方屋面積與價格關係