WHY JAVA PROGRAMMING IS THE BEST OF ALL.

TẠI SAO JAVA PROGRAMMING ĐƯỢC ƯA CHUỘNG NHẤT HIỆN NAY.

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Bảng xếp hạng JavaScript và Java Programming được ưa chuộng nhất trên thế giới ngày nay.

JavaScript phức tạp hơn Java Programming,học lâu hơn nhưng có thể dùng để tạo hình và chữ viết di chuyển (animated pictures) rất dể dàng.Với JavaScript lồng trong HTML,chúng ta có thể làm được rất nhiều việc muốn làm theo ý muốn và chỉ cần có browser thi script sẽ hoạt động được ngay cho nên được gọi là client side script.
Còn Java program codes viết xong phải cho qua compiler,interpreter mới hoạt động được.
Cần học JavaScript trước khi học Java programming.

1. JavaScript

2. Java

3. Python

4. CSS

5. PHP

6. Ruby

7. C++

8. C

9. Shell

10. C#

1-Thí dụ đây là một Java Program đơn giản.



class Rextester {

       public static void main(String[] args) {

           String a, b , c ,d ;

            a="HELLO FRIENDS" ;

            b="WHERE ARE YOU FROM ? ";

            c="WOULD YOU LIKE THIS COUNTRY ? "     ;

            d="Can you tell me what you already saw ? ";

     System.out.println(a +" "+ b+" "+ c +" "+d);}

Output.

Compilation time: 1.35 sec, absolute running time: 0.13 sec,
 cpu time: 0.07 sec, memory peak: 28 Mb, absolute service time: 1.49 sec

HELLO FRIENDS WHERE ARE YOU FROM ?  WOULD YOU LIKE THIS COUNTRY ?  Can you tell me what you already saw ?

2-Thí dụ đây là một JavaScript tạo đồng hồ có số chuyển động trên computer-desktop .

This is the Digital Clock JavaScript created by Henry Duong in 2010.Copy and paste it in Notepad then save as “digital clock.html”.

Open My Recent Documents,click the icon digital clock.The Clock will show up and run correctly on monitor.

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<html>

<body>

function dongHo() {

var now = new Date() ;

var year = now.getYear() ;

var month = now.getMonth()+1 ;

var date = now.getDate() ;

var hours = now.getHours() ;

var minutes = now.getMinutes() ;

var seconds = now.getSeconds() ;

var t = year +"-"+month +"-" +date+"/" +hours+":"+minutes+":"+seconds;

document.getElementById("clock").innerHTML=t;

setTimeout("dongHo()",1000)

}

</script>

</body>

</html>

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Vì có 10 lý do sau đây nên Java được ưa chuộng nhất hiện nay trên thế giới:

1- Java is easy to learn.

2- Java is an Object Oriented Programming Language. Originally, a program was a logical procedure that gets input data, processes it, and produces output data. It is the model organized around objects

3- Java has a Rich API. It provides API (Application Programming Interface) for I/O (Input / Ouput). It is a set of routines, protocols, and tools used for building software applications.

4- Powerful Development Tools.

5- Big Open Source Libraries. Beside Google, Apache many more other organizations have made a lot of libraries helping in writing Java programs much easy and faster.
6- Community Support.

7- Java is free, you pay nothing for learning.

8- Document support is perfect(Javadocs).

9- Java is Platform Independent. Write it once and run it anywhere

10- Java is Everywhere. On desktop, on mobile

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Monday, September 7, 2015

WHY JAVA PROGRAMMING IS THE BEST OF ALL.