Question

when i run the program on eclipse it gives me this error:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
   at SIM.main(SIM.java:12)

how do I fix that ? (please fix it )

import java.util.*;
import java.util.Scanner;
import java.util.ArrayList;
import java.io.File;
import java.io.FileNotFoundException;
import java.lang.Math;

public class SIM{
  
public static void main(String[] args) throws FileNotFoundException
{
  
   int cacheSize = Integer.parseInt( args[1] );
int assoc = Integer.parseInt( args[2] );
int replacement = Integer.parseInt( args[3] );
int WB = Integer.parseInt( args[4] );
File traces = new File(args[5]);
  
Scanner s = new Scanner(traces);

int numSets = cacheSize / (64 * assoc);
int[][] cache = new int[600][64];
int hits = 0;
int misses = 0;
int reads = 0;
int writes = 0;
int addressCount = 0;
int numSetBits = (int)(Math.log(numSets)/Math.log(2.0));

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Answer 1

If you have any doubts, please give me comment...

import java.util.*;

import java.util.Scanner;

import java.util.ArrayList;

import java.io.File;

import java.io.FileNotFoundException;

import java.lang.Math;

public class SIM {

    public static void main(String[] args) throws FileNotFoundException {

        if(args.length<6){

            System.out.println("Usage: java SIM <optional-param> <cacheSize> <assoc> <replacement> <WB> <traces>");

            System.exit(0);

        }

        int cacheSize = Integer.parseInt(args[1]);

        int assoc = Integer.parseInt(args[2]);

        int replacement = Integer.parseInt(args[3]);

        int WB = Integer.parseInt(args[4]);

        File traces = new File(args[5]);

        Scanner s = new Scanner(traces);

        int numSets = cacheSize / (64 * assoc);

        int[][] cache = new int[600][64];

        int hits = 0;

        int misses = 0;

        int reads = 0;

        int writes = 0;

        int addressCount = 0;

        int numSetBits = (int) (Math.log(numSets) / Math.log(2.0));

        // your additional statements

    }

}