OS Disk Scheduling: C-LOOK implementation in Java

/* For info on C-LOOk check the link:
http://en.wikipedia.org/wiki/LOOK_algorithm
*/

import java.util.*;

class CLOOKDS{

int head=0;
int dir=0;
Scanner obj=new Scanner(System.in);
int start=0,end=0,beg=0;
int sum[]=new int[2];
int ref[][]=new int[8][2];

void moveLeft(){
System.out.println("ML Wrkng");
int j=0;

for(int i=(start-1);i>0;i--){

ref[j][1]=Math.abs(ref[i][0]-ref[i-1][0]);
sum[0]+=ref[j][1];
System.out.println(ref[i][0]+" "+ref[j][1]);
j++;
}
}
void moveRight(){
System.out.println("MR Wrkng");
for(int i=start;i<7;i++){
ref[i][1]=Math.abs(ref[i][0]-ref[i+1][0]);
sum[1]+=ref[i][1];
System.out.println(ref[i][0]+" "+ref[i][1]);
}

}
void sort(){
System.out.println("Working Sort");
int temp=0;
for(int i=0;i<8;i++){
for(int j=i+1;j<8;j++){
if(ref[i][0]>ref[j][0]){
temp=ref[i][0];
ref[i][0]=ref[j][0];
ref[j][0]=temp;
}
}
}

for(int i=0;i<8;i++){
System.out.println(ref[i][0]+" ");
}

for(int i=0;i<8;i++){
if(ref[i][0]>head){
start=i;
break;
}

}
if(head>=200)
start=7;
System.out.println("The Start Pos Is:"+ref[start][0]);
}

void getInput(){
System.out.println("GI Wrkng");
System.out.println("Enter The Head Pos:");
head=obj.nextInt();
System.out.println("Enter The Beg And End Points");
beg=obj.nextInt();
end=obj.nextInt();
System.out.println("Enter The Direction of Head Mov '0(L) or 1(R)'");
dir=obj.nextInt();
System.out.println("Enter The REF String");
for(int i=0;i<8;i++){
ref[i][0]=(int)((Math.random()*200)+1);
}
}

void compute(){
getInput();
sort();
if(dir==0){
moveLeft();
moveRight();
sum[0]+=Math.abs((head-ref[start-1][0]));
sum[1]+=Math.abs((ref[0][0]-ref[7][0]));
System.out.println("Left Sum Is "+sum[0]+" Right sum is "+sum[1]);}
else
{
moveRight();
moveLeft();
sum[1]+=Math.abs((head-ref[start][0]));
sum[0]+=Math.abs(ref[7][0]-ref[0][0]);
System.out.println("Left Sum Is "+sum[0]+" Right sum is "+sum[1]);
}
System.out.println("The Total Cylinder Mov Are:"+(sum[0]+sum[1]));

}

}

class CLOOKDSTest{
public static void main(String args[]){
CLOOKDS one=new CLOOKDS();
one.compute();
}
}