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can we in any way extract battery percentage of the laptop in our java program...i am doing this search on net since last week and no results...please help me regarding this problem...
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I do not think you can do it directly in Java. The information is provided by this WMI class[^] of the Windows API. You would need to write some C/C++ code to get the information into a DLL, and use JNI to access that from your Java code.
One of these days I'm going to think of a really clever signature.
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import java.io.Console;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
public class RegexTestHarness {
public static void main(String[] args){
Console console = System.console();
if (console == null) {
System.err.println("No console.");
System.exit(1);
}
while (true) {
Pattern pattern =
Pattern.compile(console.readLine("%nEnter your regex: "));
Matcher matcher =
pattern.matcher(console.readLine("Enter input string to search: "));
boolean found = false;
while (matcher.find()) {
console.format("I found the text" +
" \"%s\" starting at " +
"index %d and ending at index %d.%n",
matcher.group(),
matcher.start(),
matcher.end());
found = true;
}
if(!found){
console.format("No match found.%n");
}
}
}
}
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I don't know where you got that console hassle there - it's a complete mixup.
Your code works when the console is addressed right:
public class RegexTestHarness {
public static void main(String[] args) {
while (true) {
try {
BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter your regex:");
String strValue = console.readLine();
Pattern pattern = Pattern.compile(strValue);
System.out.println("Enter input string to search:");
String strMatch = console.readLine();
Matcher matcher = pattern.matcher(strMatch);
boolean found = false;
while (matcher.find()) {
System.out.println(String.format("I found the text" + " \"%s\" starting at "
+ "index %d and ending at index %d.",
matcher.group(), matcher.start(), matcher.end()));
found = true;
}
if (!found) {
System.console().format("No match found.");
}
} catch (IOException oException) { oException.printStackTrace();}
}
}
}
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Still a problem Sir, it says: the method console() is undefined for the type System.
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*däng* I missed that one, please change that too:
if (!found) {
System.out.println("No match found.");
}
Do you understand what had to be changed?
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dont worry i changed it to:
System.out.println(String.format("No match found.%n"));
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hallo Mr Torsten, i want us to collaborate on developing a cancer registration form for the
SA government. we gonna use java. the problem is that i dont know how we gonna integrate it into an already existing program because it doesn't meet the standard requirements.
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You need to figure that out.
Please also check out GWT, which is a java based JS-Solution for Web based applications. Could be pretty helpful and is easy to use with java coding.
Have fun.
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hi, anyone help me making mobile web voting system?...
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Try reading this section[^], then try asking a more specific question.
One of these days I'm going to think of a really clever signature.
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Assume we have a server A waiting for searching request, when such request comes the server A will multicast it to many other servers Bs each of which has a directory contains many text files and as a response to the request each of Bs servers will search inside these files for the requesting word and return the results to server A which in turn will return the file name and the location of each result to the requesting client
so
notes:
1- Server A must be multithreaded i.e. the thread which multicasts the request differs from the one which receives the results, so there must be an ID for each request.
2- Servers B also are multithreaded.
3- Multicast will be over MulticastSocket with UDP
so help me in coding that in java
?????
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You need to be rather more specific about what help you expect. It's unlikely that anyone will provide a complete implementation for you.
One of these days I'm going to think of a really clever signature.
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i am developing a email server in java i want to know should i use some dbms to store user emails or simple files
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It depends on the complexity of your system. If you anticipate needing to store lots of data then a proper database system is the obvious answer.
One of these days I'm going to think of a really clever signature.
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a database is fine. I would use derby[^].
It's well documented, integrates completely and is easy to handle.
You can also use a file based system. But that is much more complicated.
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Hi everyone!!
I'd like to ask how to use this library to make project in java which will make a file.pdf. Do you know is it possible to do this?
Thanks in advance : D
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You can get the source from http://www.mupdf.com/[^], so you would just need to write an interface between your Java code and the library. Take a look at the Java Native Interface[^] for details.
One of these days I'm going to think of a really clever signature.
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Hi all.
i want to get the equiment type eg.router,switch,pc,fire
i don't know how to use snmp to get it
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hi guys i have a question, im doing a very simple thread application that increments a value everytime a thread runs, i've got 4 threads running at the same time, but everytime all threads increment the count var, its allways 1 it doesn't change on each thread execution i use synchronized to allow 1 thread increments the var at a time but after all threads die count var outputs same value,
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Please show your code, we cannot guess what may be happening.
One of these days I'm going to think of a really clever signature.
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My guess is that you made the counter an instance variable in the thread, so they all have their own copy. But you haven't posted enough to be sure.
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BobJanova wrote: made the counter an instance variable in the thread
That was my guess too!
5+
Cheers!
"I had the right to remain silent, but I didn't have the ability!"
Ron White, Comedian
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