Slice string in java

How slice string in java? I'm getting row's from csv, and xls, and there for example data in cell is like

14.015_AUDI

How can i say java that it must look only on part before _ ? So after manipulating i must have 14.015. In rails i'll do this with gsub, but how do this in java?

5 Answers

You can use String#split:

String s = "14.015_AUDI"; String[] parts = s.split("_"); //returns an array with the 2 parts String firstPart = parts[0]; //14.015 

You should add error checking (that the size of the array is as expected for example)

Instead of split that creates a new list and has two times copy, I would use substring which works on the original string and does not create new strings

String s = "14.015_AUDI"; String firstPart = s.substring(0, s.indexOf("_")); 

String str = "14.015_AUDI"; String [] parts = str.split("_"); String numberPart = parts[0]; String audi = parts[1]; 

Should be shorter:

"14.015_AUDI".split("_")[0]; 

Guava has Splitter

List<String> pieces = Splitter.on("_").splitToList("14.015_AUDI"); String numberPart = parts.get(0); String audi = parts.get(1);