System.in.readLine is not working!!!!

Question

I work in Linux platform.I wonder why I'm getting compilation error in
"system.in.readLine".While compiling the following application program:
//java script to sort no of elements
import java.io.*;
class sort{
public static void main(String[] args)
int max=0,data[],temp,i,j;
System.out.println("enter the max array size");
system.in.readLine(Integer.parseInt(max));
data=new int[max];
for(i=0;i<max;i++)
System.in.readLine(Integer.parseInt(data));
System.out.println("elements before sorting");
System.out.println(data[i]);
for(i=0;i<max-1;i++)
for(j=i+1;j<max;j++)
if(data[i]<data[j])
temp=data[i];
data[i]=data[j];
data[j]=temp;
for(i=0;i<max;i++)
System.out.println("elements before sorting");
System.out.println(data[i]);
I'm getting following compilation error:
sort1.java:8: Undefined variable, class, or package name: system
system.in.readLine(Integer.parseInt(max));
^
sort1.java:12: Incompatible type for method. Can't convert int to java.lang.String.
System.in.readLine(Integer.parseInt(data[i]));
^
2 errors
will u please help me?

Answer 1

Here's a working version that you can study for the i/o technique.
Your sort is not correct, I'll leave that for you to fix. Note that all your references to data need to be to an individual element of the array, like this: data[k] not just "data".
//java script to sort no of elements
import java.io.*;
class Sort {
    public static void main(String[] args) throws IOException {
        int max=0,data[],temp,k,j;
        BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("enter the max array size");
        max = Integer.parseInt(in.readLine());
        data=new int[max];
        System.out.println("enter " + max + " elements");
        for(k=0;k<max;k++) {
            data[k] = Integer.parseInt(in.readLine());
        System.out.println("elements before sorting");
        for(k=0;k<max;k++) {
            System.out.println(data[k]);
        for(k=0;k<max-1;k++) {
            for(j=k+1;j<max;j++) {
                if(data<data[j]) {
                    temp=data;
                    data=data[j];
                    data[j]=temp;
        System.out.println("elements after sorting");
        for(k=0;k<max;k++) {
            System.out.println(data[k]);
}