Char array size ? Stringbuffer to save an HTMl file in a string

Question

I am reading an HTML file and saving it in a string. I wanted to read the length (int len = con.getcontentlength()) and put char charArray=new char(len) but the result of getContentLength is always -1. So I fix the charArray but if I put char[] charArray=new char[1] or char[] charArray=new char[512] or char[] charArray=new char[1024]

it always works.

I don't understand why.

public static void main(String[] args) throws Exception
{
    String name="AAAA";     
    URL url = new URL("http:...");
    URLConnection con = url.openConnection();

    InputStream is = con.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);

    int numCharsRead;   
    char[] charArray = new char[1];
    StringBuffer sb = new StringBuffer();
    while ((numCharsRead = isr.read(charArray)) > 0)
        sb.append(charArray, 0, numCharsRead);
    String htmlString = sb.toString();

don't use StringBuffer unless your program is multithreading. use StringBuilder instead. — soulcheck
– soulcheck, Commented Jan 16, 2013 at 9:57
Ok thx i changed to Stringbuilder but the charArray ? i can put the dimension i want — Alpan67
– Alpan67, Commented Jan 16, 2013 at 10:03

TheWhiteRabbit · Accepted Answer · 2013-01-16 09:47:00Z

3

Change from new char[1]; to new char[isr.available()];

answered Jan 16, 2013 at 9:47

TheWhiteRabbit

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Comments

Mohammod Hossain · Accepted Answer · 2013-01-16 10:00:05Z

0

InputStreamReader isr = new InputStreamReader(is);
    int c = 0;
    while((c = isr.read()) != -1) {
        char character = (char) c;

        System.out.println(character);

    }

edited Jan 16, 2013 at 10:00

answered Jan 16, 2013 at 9:48

Mohammod Hossain

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