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How to use RegEx in Java? [closed]

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I would like to transfer the following code from Python to Java, but I get an error, while doing it:
import re
payload = re.search(
r'decrypt\.setPrivateKey\("(?P<privateKey>[^"]+)".*?'
r'decrypt\.decrypt\("(?P<cryptText>[^"]+)".*?'
r'document\.cookie="ipp_uid=(?P<ipp_uid>[^"]+)".*?'
r'document\.cookie="ipp_uid1=(?P<ipp_uid1>[^"]+)".*?'
r'document\.cookie="ipp_uid2=(?P<ipp_uid2>[^"]+)".*?'
r'url\s\+=\s"(?P<makeURL>.*?)"\;.*?'
r'salt="(?P<salt>[^"]+)"',
ret.content.decode('utf-8'),
re.MULTILINE | re.DOTALL
)
I have already tried the following code:
String patternString = "decrypt\\.setPrivateKey\\(\"(?P<privateKey>[^\"]+)\".*?\n"
+ " decrypt\\.decrypt\\(\"(?P<cryptText>[^\"]+)\".*?\n"
+ " document\\.cookie=\"ipp_uid=(?P<ipp_uid>[^\"]+)\".*?\n"
+ " document\\.cookie=\"ipp_uid1=(?P<ipp_uid1>[^\"]+)\".*?\n"
+ " document\\.cookie=\"ipp_uid2=(?P<ipp_uid2>[^\"]+)\".*?\n"
+ " url\\s\\+=\\s\"(?P<makeURL>.*?)\"\\;.*?\n"
+ " salt=\"(?P<salt>[^\"]+)\"";
Pattern payload = Pattern.compile(patternString);
String content = new String(html.getBytes(), "UTF-8");
Matcher m = payload.matcher(html);
if(m.find()){
System.out.println("Found: " + m.group(0));
}else{
System.out.println("not found");
}
... but I am getting this error:
java.util.regex.PatternSyntaxException: Unknown inline modifier near index 27
decrypt\.setPrivateKey\("(?P<privateKey>[^"]+)".*?
decrypt\.decrypt\("(?P<cryptText>[^"]+)".*?
document\.cookie="ipp_uid=(?P<ipp_uid>[^"]+)".*?
document\.cookie="ipp_uid1=(?P<ipp_uid1>[^"]+)".*?
document\.cookie="ipp_uid2=(?P<ipp_uid2>[^"]+)".*?
url\s\+=\s"(?P<makeURL>.*?)"\;.*?
salt="(?P<salt>[^"]+)"
^
at java.util.regex.Pattern.error(Pattern.java:1957)
at java.util.regex.Pattern.group0(Pattern.java:2896)
at java.util.regex.Pattern.sequence(Pattern.java:2053)
at java.util.regex.Pattern.expr(Pattern.java:1998)
at java.util.regex.Pattern.compile(Pattern.java:1698)
at java.util.regex.Pattern.<init>(Pattern.java:1351)
at java.util.regex.Pattern.compile(Pattern.java:1028)
at fabian.site.MyModule.test(MyModule.java:76)
at fabian.site.MyModule.run(MyModule.java:61)
at fabian.thread.ThreadPool$PoolThread.run(ThreadPool.java:50)
Thank you for your help guys!!

Two things stand out to me:
Named capturing groups in Java are structured like (?<name>X), not (?P<name>X), so you should remove the Ps
The names cannot contain "_", so you should replace ipp_uid with something like ippUid (only letters and numbers)
String patternString = "decrypt\\.setPrivateKey\\(\"(?<privateKey>[^\"]+)\".*?\n"
+ " decrypt\\.decrypt\\(\"(?<cryptText>[^\"]+)\".*?\n"
+ " document\\.cookie=\"ipp_uid=(?<ippuid>[^\"]+)\".*?\n"
+ " document\\.cookie=\"ipp_uid1=(?<ippuid1>[^\"]+)\".*?\n"
+ " document\\.cookie=\"ipp_uid2=(?<ippuid2>[^\"]+)\".*?\n"
+ " url\\s\\+=\\s\"(?<makeURL>.*?)\"\\;.*?\n"
+ " salt=\"(?<salt>[^\"]+)\"";
I don't have any sample data, so it's hard to tell whether it works this way, but it does compile without errors.

Calling a variable from other method [duplicate]

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How do I pass data between Activities in Android application?
(53 answers)
Closed 6 years ago.
I'm new to Java and this may be a basic question. It takes me long time to understand and hopefully someone will it to me. Why can't I put priceMessage at putExtra(Intent.EXTRA_TEXT ,....) ? Is there any possible way?
public String submitOrder (String name, int price, boolean addWhippedCream, boolean addChoc) {
String priceMessage = getString(R.string.price_symbol) + (calculatePrice(addWhippedCream, addChoc));
priceMessage += "\n" + getString(R.string.name_order) + name;
priceMessage += "\n" + getString(R.string.add_whipped_cream) + " (" + addWhippedCream +")";
priceMessage += "\n" + getString(R.string.add_chocolate) + " (" + addChoc + ")";
priceMessage += "\n" + getString(R.string.cup_of_coffee) + " : " + quantity + " " + getString(R.string.cup_of_coffee);
priceMessage += "\n" + getString(R.string.thank_you);
displayMessage(priceMessage);
return priceMessage;
}
/**
* Send Button Order for Intent Action
*/
public void sendOrder (View view){
EditText nameField = (EditText)findViewById(R.id. name_field);
String name = nameField.getText().toString();
Intent sendOrder = new Intent(Intent.ACTION_SENDTO);
sendOrder.setData(Uri.parse("mailto:"));
sendOrder.putExtra(Intent.EXTRA_SUBJECT,"Tempahan Kopi : " + name);
sendOrder.putExtra(Intent.EXTRA_TEXT,priceMessage);
startActivity(Intent.createChooser(sendOrder,"Hantar Tempahan"));

In Java (and many other Object-Oriented programming languages), variables defined in a method are only available inside that method. If you want to share variables between two different methods, you can pass them as method parameters, or create them as either static or instance class members.
I'd recommend checking out the official Java Trails Tutorials to help you get started with the language. It'll explain what the different types of variables are, and when you might want to use them.

Evaluating "IF ELSE" shorthand as part of a toString() Implementation [closed]

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I have write the following toString() methode
public String toString() {
return "Product: "+ this.productName + ", Barcode: " + this.barCode
+ ", Expiration Date: " + this.expirationDate.toString() + ", Customer Price: "
+ this.customerPrice + ", Shops Price: " + this.shopsPrice
+ ", Instore Amount: " + this.inStoreAmount + ", Sale: "
+ (this.sale == null) ? "Not on sale" : + this.sale.toString();
}
But there is a problem with the way I use the if statement.
eclipse: "cannot covert from string to boolean"

You had an issue with the balancing of concatenation operator +. Also, I edited your method to be the following:
public String toString() {
return "Product: "+ this.productName + ", Barcode: " + this.barCode
+ ", Expiration Date: " + this.expirationDate.toString() + ", Customer Price: "
+ this.customerPrice + ", Shops Price: " + this.shopsPrice
+ ", Instore Amount: " + this.inStoreAmount + ", Sale: "+ ((this.sale == null) ? "Not on sale" : this.sale.toString());
}
When you are writing IF-ELSE short hand, try to keep everything in a (...) set of parentheses to keep track of things easily. I don't care what other professionals say about this, but if this helps you to understand things, so be it!

This is illegal syntax
(this.sale == null) ? "Not on sale" : + this.sale.toString()
and a compilation error should have alerted you to this problem.
Instead, use
((this.sale == null) ? "Not on sale" : this.sale.toString())
I've placed the entire ternary operator into parentheses to be clear.

Java NewLine "\n" not working in save to text file [closed]

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Here is my code:
public String display() {
return "\n......................\nFixed Employee:\n" +
"Name: " + super.fullName() +
"\nSalary: " + salary() +
" tk\n......................";
}
But when I'm invoking this method from main class, "\n" newLine not working. just showing one line output. Will you plz help to solve the problem?
Thanks

For saving in files use \r\n. \n as new lines is viable on printstreams but not writing to files.

You may need the system independent line separator as it might differ from one OS to another. Just replace the \n with the value of line separator:
I can be retrieve as you load any system property:
public String display() {
String separator = System.getProperty("line.separator"); // Load the system property using its key.
return "\n......................\nFixed Employee:\n"
+ "Name: "
+ super.fullName() +
"\nSalary: "
+ salary()
+ " tk\n......................"
.replace("\\n", separator); // replace the \n before returning your String
}
Or simply use System#lineSeparator method as #Deepanshu Bedi suggested:
public String display() {
String separator = System.lineSeparator(); // Consider it as a shortcut.
return "\n......................\nFixed Employee:\n"
+ "Name: "
+ super.fullName() +
"\nSalary: "
+ salary()
+ " tk\n......................"
.replace("\\n", separator); // replace the \n before returning your String
}

How to retrieve multiple data (rows) from database SQLite Java [closed]

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This is what I have done right now.
My table is like this:
JAPANESEALPHA ENGLISH JAPANESECHAR
kiro kilo \u30ad\u30ed
guramu gram \u30b0\u30e9\u30e0
migi right \u307f\u304e
mijikai short \u307f\u3058\u304b\u3044
Inside database (example):
mDbHelper.createCrv("kiro","kilo","\u30ad\u30ed");
mDbHelper.createCrv("guramu","gram","\u30b0\u30e9\u30e0");
mDbHelper.createCrv("mijikai","short","\u307f\u3058\u304b\u3044");
mDbHelper.createCrv("minami","south","\u307f\u306a\u307f");
mDbHelper.createCrv("miru","watch","\u307f\u308b");
Query:
String query = "SELECT docid as _id," +
KEY_ENGLISH + "," +
KEY_JAPANESEALPHA + "," +
KEY_JAPANESECHAR+
" from " + FTS_VIRTUAL_TABLE +
" where " + KEY_JAPANESEALPHA + " = '" + inputText + "';";
I also have Cursor:
private void showResults(String query) {
Cursor cursor = mDbHelper.searchCrvJapanesechar((query != null ? query.toString() : "####"));
if (cursor == null) {
Toast.makeText(getApplicationContext(),
"No Search Found!", Toast.LENGTH_LONG).show();
} else {
// Specify the columns we want to display in the result
String[] from = new String[] {
DBAdapter.KEY_JAPANESECHAR,
DBAdapter.KEY_JAPANESEALPHA,
DBAdapter.KEY_ENGLISH
};
//DBAdapter.KEY_TAGALOG};
// Specify the Corresponding layout elements where we want the columns to go
int[] to = new int[] { R.id.sjapanesechar,
R.id.sjapanesealpha,
R.id.senglish};
// R.id.stagalog};
For compound words, I need to minimize my database so that when the
Input: kiroguramu
I can concatenate the english term of kiru and english term of guramu. That will result
Result: kilogram
Sorry I can't paste my sample images because I'm newbie.
I have get the retrieving data at http://www.mysamplecode.com/2011/11/android-searchview-using-sqlite-fts3.html It was a great help.
Thankyou.

Hi I think you should try to read some basic of JSON parsing here
http://www.androidhive.info/2012/01/android-json-parsing-tutorial/