Getting data with regular expression in java

Question

I've a string like this, and I need to save each value in two strings:

Variable 1 = 385289
Variable 2 = L1S8dM4OW0VkGhKgl0NcGA%3d%3d

<<<385289<<<L1S8dM4OW0VkGhKgl0NcGA%3d%3d

Another example:

<<<383047<<<BBBIVvjjeNodJzLrIJqZaw%3d%3d

How can I do this with a regular expression in java ?

i assumed that you're trying to do joining. Please put the input sat very first and then put the expected output. — Avinash Raj
– Avinash Raj, Commented Apr 24, 2015 at 10:54

Bohemian · Accepted Answer · 2015-04-24 11:18:33Z

2

Use replaceAll() to extract the bit you want:

String var1 = str.replaceAll("<<<(.*?)<.*", "$1");
String var2 = str.replaceAll("<<<.*?<<<", "");

answered Apr 24, 2015 at 11:18

Bohemian♦

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2 Comments

Alex Salauyou Over a year ago

why .*?, not .* ?

Bohemian Over a year ago

@SashaSalauyou a) it's faster (.* moves the pointer all the way to the end of input then backtracks 1 char at a time until a match is found), b) it .*? allows for <<< to appear as part of the second value - ie .*? stops consuming as soon as a match is found, but .* will potentially skip over <<< and match a later occurrence of <<<

Mateusz Sroka · Accepted Answer · 2015-04-24 10:53:07Z

0

You can try with this code:

Object Variable1;
Object Variable2;
String example = "<<<385289<<<L1S8dM4OW0VkGhKgl0NcGA%3d%3d";
String[] split = example.split( "<<<" );
for( String splittedString : split )
{
    if( splittedString.length() > 2 )
    {
        Variable1 = split[1];
        Variable2 = split[2];
    }
}

answered Apr 24, 2015 at 10:53

Mateusz Sroka

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