Remove duplicate entries from ArrayList or List without using collection

Remove duplicate entries from ArrayList or List without using collection.

package testMavProject;

import java.util.ArrayList;

public class removeDuplicate {

public static void main(String[] args) {

// Create a ArrayList type of Integer or other datatype.

ArrayList<Integer> aList=new ArrayList<Integer>();

aList.add(5);

aList.add(7);

aList.add(5);

aList.add(6);

for(int i=0;i<aList.size();i++){

for(int j=i+1;j<aList.size();j++)

{

//Check for duplicate value using if condition

//If you are comparing Integer then you could use "==" sign; if you have string values then user equals method instead of ==. 

if(aList.get(i)==(aList.get(j)))

{

//if values matched then remove the value from J index and back your J index to previous index J--

aList.remove(aList.get(j));

j--;

}

}

}

//Print your list without duplicate value.

System.out.println(aList);

}

}