How to use Arrays.sort() in java

import java.util.Arrays;

public class ArrayEx {

public static void main(String args[]){

int[] myArray2 = new int[]{23,2,21,4,5};
Arrays.sort(myArray2);
for(int i =0;i<myArray2.length;i++){
System.out.println(myArray2[i]);
}


String[] names = new String[]{"Peter", "Patricia", "Hunter", "Sarah",
       "Gabe", "Gina", "Rob", "John", "Zoey", "Tammy", "Robert",
       "Sean", "Paschal", "Kathy", "Neleh", "Vecepia" };

Arrays.sort(names);

for(int a=0;a<names.length;a++){
System.out.println(names[a]);
}
}

}