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You should learn to use Google for general research questions, as you will need to use it a lot. In the meantime start with the Java Tutorials[^].
One of these days I'm going to think of a really clever signature.
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In oracle webpage you are able to find good tutorials!
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You are replying to the wrong person.
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Hello,
Firstly - good on you for wanting to learn Java!
With regards to tutorials - there are multiple resources available - one set of tutorials I found extremely helpful were "The Java Tutorials." It is quite helpful for a beginner, giving aid and direction. You can access the tutorial here: http://docs.oracle.com/javase/tutorial/java/index.html[^]
April
Comm100 - Leading Live Chat Software Provider
modified 27-May-14 8:33am.
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What is the point of repeating the exact same information I already provided?
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how to write main class for run this class.
1. edit this class.
2. create main class for run
I need to write , read text file path C:\\file.txt
anyone help me please.
package
import java.io.*;
public class TextFileOperator {
public TextFileOperator(String path){
f = new File(path);
}
File f;
public void write(String text, boolean isAppend){
FileOutputStream out = new FileOutputStream(f,isAppend);
OutputStreamWriter wr = new OutputStreamWriter(out);
wr.write(text);
wr.close();
out.close();
}
public String read()
{
FileReader reader = new FileReader(f);
BufferedReader bf = new BufferedReader(reader);
StringBuilder bd = new StringBuilder();
String s;
while((s = bf.readLine()) != null){
bd.append(s);
bd.append("\n");
}
return bd.toString();
}
}
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Take a look at the Java Tutorials[^].
You just need to add something of the form:
public static void main(String args[])
{
}
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I want to learn java programming... after that i'll create a website for java , c , c++ programming tutorials specially for beginners, just like me..
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One of these days I'm going to think of a really clever signature.
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May you please encote correctly your code and post what errors you have ?
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Hey im kind new in this , but I have coded this but It doesn't work...
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
public class webpagesaver{
public static void main(String[] args) throws IOException{
URLConnection conn = url.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
String saveFile = "PaginaCopiada.html"; //name of SaveFile
String location = "http://www.sapo.pt"; //ask website
URL url = new URL(location);
BufferedWriter out = new BufferedWriter(new FileWriter(saveFile));
BufferedReader in = new BufferedReader(new InputStreamReader(is));
String l = out.readLine();
while(l!=null){
out.write(l);
out.newLine();
}
in.close();
out.close();
}
}
The objective is : Put website link and Save all the page..
May you help me ?
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cubocik wrote: It doesn't work...
Please do not assume that people can guess what this means; explain what happens, what results or errors you see etc. Also please use <pre> tags around your code so it is properly formatted.
One of these days I'm going to think of a really clever signature.
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Code:
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
public class webpagesaver{
public static void main(String[] args) throws IOException{
String saveFile = "PaginaCopiada.html";
String location = "http://www.sapo.pt";
URL url = new URL(location);
URLConnection conn = url.openConnection();
InputStream is = conn.getInputStream();
conn.connect();
BufferedWriter out = new BufferedWriter(new FileWriter(saveFile));
BufferedReader in = new BufferedReader(new InputStreamReader(is));
String l = out.readLine();
while(l!=null){
out.write(l);
out.newLine();
}
in.close();
out.close();
}
}
Compiling messages
Code:
URLConnection conn = url.openConnection();
^
symbol: class URLConnection
location: class webpagesaver
webpagesaver.java:19: error: cannot find symbol
InputStream is = conn.getInputStream();
^
symbol: class InputStream
location: class webpagesaver
webpagesaver.java:23: error: cannot find symbol
String l = out.readLine();
^
symbol: method readLine()
location: variable out of type BufferedWriter
3 errors
Edit/Delete Message
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You are missing a few #import statements, and you are also trying to read from your output stream. Try this:
import java.io.*;
import java.net.*;
public class webpagesaver{
public static void main(String[] args) throws IOException{
String saveFile = "PaginaCopiada.html";
String location = "http://www.sapo.pt";
URL url = new URL(location);
URLConnection conn = url.openConnection();
InputStream is = conn.getInputStream();
conn.connect();
BufferedWriter out = new BufferedWriter(new FileWriter(saveFile));
BufferedReader in = new BufferedReader(new InputStreamReader(is));
String l = in.readLine();
while(l!=null){
out.write(l);
out.newLine();
}
in.close();
out.close();
}
}
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Im nice , ty thats work but.. for only this site , im trying for example facebook and its save a blank page
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Another I checked now with iol.pt , and when it was running its never finish running and when I control+C it it created a 1,5Gb
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You need to use your debugger to see what gets returned in the InputStream.
One of these days I'm going to think of a really clever signature.
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what debugger you advice?
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Whichever one you have available. If you are using eclipse or Netbeans then they both include built in visual debuggers. If you are using command line tools then jdb. You can find lots of useful information on Java in general starting at the Java Tutorials[^].
One of these days I'm going to think of a really clever signature.
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Thanks for the answer I just forgot the line l=in.nextLine(); If not the program will read infinite time the first Line lol, Thanks !!!!
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That's OK, so did I. 
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I am making a Web site in which i want to capture Sound from Client side & then send 10 sec Audio to Server.
I researched & get two things,
1) To use flash based Audio recorder
2) To use Applet
so kindly help in this using both Approach.
Thanks in Advance !
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Can anyone tell me why the below code is not executing?
<pre lang="cs">class ReturnSum
{
int sum(int a, int b)
{
return(a+b);
}
}
class SumApp12
{
public static void main(String a[])
{
ReturnSum obj=new ReturnSum();
int s1=(int)sum(50,60);
double s2=obj.sum(1.2,6.3);
System.out.println(s1+ "\t" +s2);
}
}</pre>
Akki
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