java getting Last line(fastest way) from a String Variable

Question

I have a String Variable Contains lines of text

line1(Contains String)
line2(Contains String)
line3(Contains String)
line4(Contains String)

My requitement is to get a Last line of text?

Could any one help?

Solution 1

paragraph.substring(paragraph.lastIndexOf("\n"));

Solution 2

// get the index of last new line character
int startIndex = str.lastIndexOf("\n");

String result = null;

// see if its valid index then just substring it to the end from that

if(startIndex!=-1 && startIndex!= str.length()){
  str.subString(startIndex+1);
}

Solution 3

let say your string is like this

String s = "aaaaaaaaaaaaa \n bbbbbbbbbbbbbbb \n cccccccccccccccccc \nddddddddddddddddddd";

Now you can split it using

    String[] arr = s.split("\n");
    if (arr != null) {
        // get last line using : arr[arr.length - 1]
        System.out.println("Last    =====     " + arr[arr.length - 1]);
    }

Solution 4

String[] lines = fileContents.split("\n"); String lastLine = lines[lines.length - 1];

this lastline variable would contain last line.

Solution 5

you can try

paragraph.substring(paragraph.lastIndexOf("\n"));

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