Strings and 2D Arrays:Remove Consecutive Duplicates

public class solution {
public static String removeConsecutiveDuplicates(String input) {
    char lastChar=input.charAt(0);
    String ans=input.charAt(0)+"";
    for(int i=1;i<input.length();i++)
    {
        if(input.charAt(i)!=lastChar)
        {
            ans=ans+input.charAt(i);
            lastChar=input.charAt(i);
        }
    }
    return ans;
}
}