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I have a java string in JSON format (the conventional key:value) which I get from Amazon S3. Some of the keys have regular expression pattern defined. What is the best way to get these keys and then fetch the values corresponding to them?
I know there exists regex of javautil which I'm planning to use. Is there any other better way for accessing the regex type keys?
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I want to validate different kinds of strings which are of different format like
10JUN2022, 2Mx1D, 4M, 1D, TEN, ONE|TEN etc.. and I have written regular expression for that '''^([0-9A-WYZa-wyz ]+)([xX|]([0-9A-WYZa-wyz ]+))?$''' and it's working fine but I also need to validate one more string 2022-06-10, but the expression is failing.
When it comes to regex, don't try to get overly clever. Just solve the basic problem. If that takes multiple regex patterns, so be it. It's much easier to maintain and read.
I would use this for the first regex: [0-3]?\d\w{3}(1|2)\d{3}
and this for the second regex: (1|2)\d{3}(-\d{2}){2}
or combine them if you must: ([0-3]?\d\w{3}(1|2)\d{3})|((1|2)\d{3}(-\d{2}){2})
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Here is the sammple data which we have to wrap in double quotes "Key":"value" to format :
{Data:{Management:[{individual:{individual_Suffx:,individual_FName:XYZ,individual_LName:ABC,individual_Emplyee_Title:BOARD SECRETARY&PRESIDENT/CEO,individual_Directng_MName:MNO,individual_DOB:1960-05-21},individual_Tin:{},individual_NPI_Id:{},individual_OrgIndvdl:[{Ownrshp_MngngCntrl_EfctvDt:2009-11-30,Ownrshp_MngngCntrl_RoleCd:W},{Ownrshp_MngngCntrl_EfctvDt:2009-11-30,Ownrshp_MngngCntrl_RoleCd:10},{Ownrshp_MngngCntrl_EfctvDt:2009-11-30,Ownrshp_MngngCntrl_RoleCd:15}],Mngng_Mdcr:{}},{Mngng_Indvdl:{Mngng_Indvdl_FName:TIMOTHY,Mngng_Indvdl_LName:TOOLEY,Mngng_Indvdl_MName:C,Mngng_Indvdl_DOB:1958-07-02},Mngng_Tin:{},Mngng_NPI_Id:{},Mngng_OrgIndvdl:{OwnrshpIntrst_MngngCntrl_EfctvDt:2014-05-01,Ownrshp_MngngCntrl_RoleCd:W},Mngng_Mdcr:{}}}}
Not sure if this will cover all corner cases, but this regex should work for your example:
String json = ...
json = json.replaceAll("[^{}\\[\\]:,]+", "\"$0\"");
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it is possible to assign that big number in java? i need to make a calculation of 39 digits value. could any help? Thanks
Problem:
Consider the following composite number:
340282367237851113557325445936183246849
Write a Java method to find two numbers whose product is the above number.
I guess you need to check out the BigInteger of the java API. That might be able to store your results of those much big numbers. Read the documentation,
http://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html
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I want to display the first folder name from the path.
/mnt/sdcard/Videos/lk.jpeg, I want to display mnt string. in java
/mnt/sdcard/Videos/lk.jpeg--> **mnt**
You can split on / and use [1] element from result array.
You can either use regular expressions or you can use String.split(). Note that the split() result should be checked for live usage (e.g. if it has at least two elements).
String desired = "/mnt/sdcard/foo".split("/")[1];
String str = "/mnt/sdcard/Videos/lk.jpeg";
System.out.println(str.split("/")[1]);
Try this out. This is a poor question. But maybe the asker can be a newbie.
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can someone give me a proper explanation why in java (or is this applicable to all programming language?) if the path is retrieved from the database, it is okay to use only 1 slash like '\192.168.173.220\folder\folder1\folder2' instead of '\\192.168.173.220\folder\folder1\folder2'.
When you write a String literal in Java source code, you need to escape backslash characters.
But in a String object ... which is what you get at runtime when you read a String from a database (or anywhere else) ... each character stands for itself.