How to get key and value from a string [closed] - java

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I have a question about how to write a regex expression to get the key and value pairs from below string?
{"ReturnCode":"0","ErrorMsg":"success","EncryToken":"##xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"}
Could someone help me learn on what this can be done?
Thanks very much.

This one should suit your needs:
"([^"]+)"\s*:\s*"([^"]+)"
The key is in the first group, the value in the second one.
Visualization by Debuggex

You can use Java JSON or the Google Gson to parse this JSON string ...
as illustrated here - http://answers.oreilly.com/topic/257-how-to-parse-json-in-java/

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Regular expression for negative values in flower brackets [closed]

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I need a regex for patterns like
1) {-1,},
2) {-1,-2},
3) {,-2}
Please help me out.
try this,
String regex="\\{-?(\\d+)?,-?(\\d+)?},?";
String str="{-2,}";
System.out.println(str.matches(regex));
Try this,
^\{(\-\d+)?,(\-\d+)?\}$
Hope it works for you.

Get column name from where condition in java [closed]

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I am trying below:
I am trying to process where condition of sql in java. How can I get column name in where condition as a string ?
Ex: String s = "Name_id>=11"
now I want to get "Name_id", as it is a column name and i want to do processing on it.
I know it can be done using regex but I am new to regex and don't know how to do it. can someone guide me??
help will be appreciated, thanks
You can try this
s = s.replaceAll("^(\\w+).+", "$1");

How to display a portion of a string at an index of a string array [closed]

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I have a string array
String[] albumnames;
now how to take a string from particular index position with limited number of charachters.
For example,
if, albumnames[position] have value "abcdefghijk"
then i want to take the first 5 characters only.
That is "abcde".
The substring method of String can be used to achieve this. Try
String s = albumnames[position].substring(0,5);
See substring docs
albumnames[position].substring(0,5);
you can see the methods in String class, like substring, indexof

java program to check duplicate value from a given string [closed]

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I got a question states that, "we will give you a string ex:Most of the people are living in apartments and they are rich too. In this given string we have to remove "are" and we have to display the rest things...
I don't know what to do???
By simply using : "Most of the people are living in apartments and they are rich too".replaceAll("are","");
see the documentation
http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replaceAll(java.lang.String, java.lang.String)
use
"Most of the people are living in apartments and they are rich too".replaceAll("are","")

How to create substring from string at specific fixed length [closed]

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I have java String with more than 160 character, on that i want to create substring form that string for first 150 character.
I have google it for that but what i got is for make substring at special character.
Please show me possible way for do this..
String#substring(int beginIndex, int endIndex) is what you need.
String mySubString = myString.substring(0, 150);

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