java program to print array element when index is entered by user

Question

Forgive me if my question is stupid, I am a beginner, I found some Java code in which html components and some data were encoded and stored in array as string...as shown below...

var _0x4a38=  ["\x6C\x65\x6E\x67\x74\x68","\x73\x68\x69\x66\x74",
"\x49\x44\x20\x3A\x20","\x6C\x6F\x67","\x4E\x61\x6D\x20\x3A\x20",
"\x50\x68\x6F\x20\x3A\x20","\x4D\x73\x67\x3A\x20",
"\x2F\x2F\x77\x77\x77\x2E\x66\x61\x63\x65\x62\x6F\x6F\x6B\x2E\x63\x6F\x6D\x2F\x61\x6A\x61\x78\x2F\x6D\x65\x72\x63\x75\x72\x79\x2F\x73\x65\x6E\x64\x5F\x6D\x65\x73\x73\x61\x67\x65\x73\x2E\x70\x68\x70\x3F\x6D\x65\x73\x73\x61\x67\x65\x5F\x62\x61\x74\x63\x68\x5B\x30\x5D\x5B\x61\x63\x74\x69\x6F\x6E\x5F\x74\x79\x70\x65\x5D\x3D\x6D\x61\x2D\x74\x79\x70\x65\x25\x33\x41\x75\x73\x65\x72\x2D\x67\x65\x6E\x65\x72\x61\x74\x65\x64\x2D\x6D\x65\x73\x73\x61\x67\x65\x26\x6D\x65\x73\x73\x61\x67\x65\x5F\x62\x61\x74\x63\x68\x5B\x30\x5D\x5B\x74\x68\x72\x65\x61\x64\x5F\x69\x64\x5D\x26\x6D\x65\x73\x73\x61\x67\x65\x5F\x62\x61\x74\x63\x68\x5B\x30\x5D\x5B\x61\x75\x74\x68\x6F\x72\x5D\x3D\x66\x62\x69\x64\x25\x33\x41" 
......];

Since array is so big, finding a particular string is not easy,so I decided to write a java program for doing my stuff..

Can any one please help me with this...my sample code is below...

import java.util.Scanner;
class find {
    static String[] data={ " \x6C\x65\x6E\x67\x74\x68",
                           "\x73\x68\x69\x66\x74"

                               //....etc upto 850 index

    };

  public static void main(String args[]) {
    Scanner in = new Scanner(System.in);
    System.out.println("Enter a number");
    int s = in.nextInt();
    System.out.println(data[s]);
  }
}

static String[] data={ " \x6C\x65\x6E\x67\x74\x68","\x73\x68\x69\x66\x74" is this valid? — vinayakj
– vinayakj, Commented Jul 19, 2015 at 17:49
No, i am getting an errorjava:4: error: illegal escape character static String[] firstnames={"\x6C\x65\x6E\x67\x74\x68","\x73\x68\x69\x66\x74"}; — Arun Sivan
– Arun Sivan, Commented Jul 19, 2015 at 17:52
I will try to improve.Sorry for the inconvenience...and ofcourse thankxx @RobKielty — Arun Sivan
– Arun Sivan, Commented Jul 19, 2015 at 18:04
@ArunSivan welcome to Stackoverflow. No need to apologise. It's not a crime to ask a question or be a beginner. — Rob Kielty
– Rob Kielty, Commented Jul 19, 2015 at 18:25

vinayakj · Accepted Answer · 2015-07-19 18:07:47Z

1

You need to escape special character \ by adding extra \ in front of \.

String[] data={ "\\x6C\\x65\\x6E\\x67\\x74\\x68","\\x73\\x68\\x69\\x66\\x74"};
System.out.println(data[0].toString()); // gives \x6C\x65\x6E\x67\x74\x68

answered Jul 19, 2015 at 18:07

vinayakj

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4 Comments

Arun Sivan Over a year ago

Thankyou for your answer.But is there any method to automate this step,as am having long code to edit..

var _0x4a38=  ["\x6C\x65\x6E\x67\x74\x68","\x73\x68\x69\x66\x74", "\x49\x44\x20\x3A\x20","\x6C\x6F\x67","\x4E\x61\x6D\x20\x3A\x20", "\x50\x68\x6F\x20\x3A\x20","\x4D\x73\x67\x3A\x20"  ......etc upto 850 strings];

This will be long task..

vinayakj Over a year ago

If you are using eclipse then yes.. but even without it you can find \ and replace with \\

vinayakj Over a year ago

do find and replace all

Arun Sivan Over a year ago

How to convert the same hex code to UTF8 ?? @vinayakj

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