How to remove a part of string using regex in java

Question

I am comparing file names in a folder ,I want to remove some part of string and check whether name exists or not

Here is my file name :

file1Name:AB-05012_MM-AB_585859_01 
file2Name:AB-05012_MM-AB_732320_01-1

Now i want to compare the string only till

AB-05012_MM-AB_732320_01 ignore '-1'

Here is my logic

if (file1Name.equals(file2Name.contains(""))){
  list.add(file1Name);           
}

Not enough info. Do you only want to modify file names that end in -1? Or - and a digit? Or - and any character? Or - and more than one character? What characters do you want to check for following the -? Or do you want to look for - followed by a digit in the middle of the name? Can anything follow the -1? If so, what? — ajb
– ajb, Commented Oct 20, 2015 at 5:26
Can you post example search terms and matching/non-matching filenames? — Bohemian
– Bohemian ♦, Commented Oct 20, 2015 at 6:56
I have two folder which contains xml files & other contains .cgm files, Now Both the files have almost same name ,the .cgm files have extra '-00' — Rakesh
– Rakesh, Commented Oct 20, 2015 at 8:09
For each xml we have one or more .cgm files in the folder ,It is like abc.xml has abc-01,abc-02,abc-03 — Rakesh
– Rakesh, Commented Oct 20, 2015 at 8:09
Now i want to check the name and add the all the .cgm files to a list — Rakesh
– Rakesh, Commented Oct 20, 2015 at 8:09

SacJn · Accepted Answer · 2015-10-20 06:31:12Z

1

When you know there is an extra character in second file name then why not using

fileName2.startsWith ( fileName1)

or

int indexOfDot = fileName1.lastIndexOf(".");
fileName2.startsWith ( fileName1.subString( 0, indexOfDot)

But this is very specific to your problem. or for the cases where
fileName2 = fileName1 + any character or digit

edited Oct 20, 2015 at 6:31

answered Oct 20, 2015 at 5:41

SacJn

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13 Comments

Rakesh Over a year ago

No i have to check for different file names

SacJn Over a year ago

Until unless you put more light on your problem, none will be able to give you the suitable solution

Rakesh Over a year ago

I have two folder which contains xml files & other contains .cgm files, Now Both the files have almost same name ,the .cgm files have extra '-00'

Rakesh Over a year ago

For each xml we have one or more .cgm files in the folder ,It is like abc.xml has abc-01,abc-02,abc-03

Rakesh Over a year ago

Now i want to check the name and add the all the .cgm files to a list

|

Rahul Tripathi · Accepted Answer · 2015-10-20 05:25:49Z

0

You can try this:

String myStr = str.substring(0, str.lastIndexOf("-1"));

answered Oct 20, 2015 at 5:25

Rahul Tripathi

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Comments

Kerwin · Accepted Answer · 2015-10-20 06:33:23Z

0

if your file name is same length:

if (file1Name.equals(file2Name.substring(0,24))){
 //if same to some  task              
}

else:

if (file1Name.equals(file2Name.substring(0,file2Name.lastIndexOf('-')))){
 //if same to some  task              
}

And I think the second solution better.

answered Oct 20, 2015 at 6:33

Kerwin

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