CODEWITHSUNDEEP
javafile-io
newbie07
newbie07

Reputation: 83

How to read specific parts of the text file using Java

I have a text file that contains

"[PartA]
1
2
3
[PartB]
4
5
6
[PartC]
7
8
9"

what I have done so far is to read [PartA] only here's my code:

try
    {
        BufferedReader fw = new BufferedReader(new FileReader(new File(filename)));

        while(!((content=fw.readLine()).equals("[PartB]")))
        {
            System.out.println(content);
        }
    }
    catch(Exception e)
    {

    }

so how can I read only PartB or only PartC?

Upvotes: 0

Views: 3261

Answers (2)

troy
troy

Reputation: 714

try
    {
        BufferedReader fw = new BufferedReader(new FileReader(new File(filename)));
     while(!fw.readLine()).equals("[PartB]"){} //search for PartB
     while(!(content=fw.readLine())).equals("[PartC]")){   //read till PartC
        System.out.println(content);
     }

    }
    catch(Exception e)
    {

    }

Upvotes: 0

JBires
JBires

Reputation: 441

You could say

boolean partB = false;
content = fw.readLine();
while(content != null) {
    if(content.equals("[PartA]")) {
        partB = false;
    } else if (content.equals("[PartB]")) {
        partB = true;
    } else if (content.equals("[PartC]")) {
        partB = false;
    }
    if (partB) {
        System.out.println(content);
    }
    content = fw.readLine();
}

and follow that same logic for PartC

Upvotes: 3

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