53 lines
1.2 KiB
Java
53 lines
1.2 KiB
Java
import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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/**
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*
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*/
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/**
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* @author KAJE
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*
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*/
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public class ClassicIoWholeFile {
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private static int lineCount(String path, boolean doDance){
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if ( ! doDance ) return -1;
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int len = (int)(new File(path).length());
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int cnt = 0;
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FileInputStream fis;
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try {
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fis = new FileInputStream( path );
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byte buf[] = new byte[len];
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try {
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fis.read(buf);
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fis.close();
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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for (int i = 0; i < len; i++) {
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if (buf[i] == '\n') cnt++;
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}
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} catch (FileNotFoundException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return cnt;
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}
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public static void main(String[] args){
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long startTime = System.nanoTime();
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lineCount("", false);
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long dryRun = System.nanoTime() - startTime;
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startTime = System.nanoTime();
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int lines = lineCount("input.txt", true);
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long stopTime = System.nanoTime();
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System.out.println("Lines: " + String.valueOf(lines));
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System.out.println("Time to complete: " + (stopTime - startTime - dryRun) + " " + dryRun);
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}
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}
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