42 lines
1.1 KiB
Java
42 lines
1.1 KiB
Java
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Count total number of occurences of a String in a text file
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import java.io.File;
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import java.io.BufferedReader;
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import java.io.FileReader;
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import java.util.StringTokenizer;
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public class WordCounter {
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public static void main(String args[]) throws Exception {
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if(args.length != 1) {
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System.out.println("Invalid number of arguments!");
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return;
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}
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String sourcefile = args[0];
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String searchFor = "good bye";
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int searchLength=searchFor.length();
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String thisLine;
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try {
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BufferedReader bout = new BufferedReader (new FileReader (sourcefile));
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String ffline = null;
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int lcnt = 0;
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int searchCount = 0;
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while ((ffline = bout.readLine()) != null) {
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lcnt++;
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for(int searchIndex=0;searchIndex<ffline.length();) {
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int index=ffline.indexOf(searchFor,searchIndex);
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if(index!=-1) {
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System.out.println("Line number " + lcnt);
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searchCount++;
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searchIndex+=index+searchLength;
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} else {
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break;
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}
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}
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}
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System.out.println("SearchCount = "+searchCount);
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} catch(Exception e) {
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System.out.println(e);
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}
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}
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}
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