Java: How to RegEx or Substring Utils this String?

Question

"Current Peak :   830           300"

How can I get hold of the two numbers, but without the spaces. (There are 5 or more spaces in between each substring)

Using apache's StringUtils I got so far:

String workUnit =
StringUtils.substringAfter(thaString,
":");

This gives back:

"830           300"

but still with a lot of spaces and not separated.

score 6 · Answer 1 · answered Jun 26 '11 at 23:47

6

Or just using core java:

    String input = "Current Peak :   830           300";
    String[] parts = input.split("\\s+"); // Split on any number of whitespace
    String num1 = parts[3]; // "830"
    String num2 = parts[4]; // "300"

answered Jun 26 '11 at 23:47

Bohemian

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score 3 · Accepted Answer · answered Jun 26 '11 at 23:42

3

Untested, but this should give you your two numbers:

String[] workUnits = StringUtils.split(StringUtils.substringAfter(thaString, ":"));

answered Jun 26 '11 at 23:42

Kevin

3,771
2
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Perfect! System.out.println(workUnits[i]); gives back the resp. values. I liked your first solution (edited away) w/o apache's library, String [] temp = myArray[3].split(" "); however System.out.println(temp[temp.length-1]); gave only back the last number .. – Stephan Kristyn Jun 26 '11 at 23:48

score 1 · Answer 3 · answered Jun 26 '11 at 23:50

You can do something like this:

Pattern patt = Pattern.compile("Current Peak :\\s*(\\d*)\\s*(\\d*)");
Matcher matcher = patt.matcher("Current Peak :   830           300");
if (matcher.find()) {
    String first  = matcher.group(1); // 830
    String second = matcher.group(2); // 300
    // ...
}

score 0 · Answer 4 · answered Jun 26 '11 at 23:49

0

String[] workUnits = StringUtils.substringAfter(thaString,":").split("\\s+");

answered Jun 26 '11 at 23:49

Mads Hansen

63,927
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Java: How to RegEx or Substring Utils this String?

4 Answers4