"public class Example {
public static void main(String argu[]) {
String str = ""beautiful beach"";
char[] carray = str.toCharArray();
System.out.println(""The string is:"" + str);
System.out.print(""Duplicate Characters in above string are: "");
for (int i = 0; i < str.length(); i++) {
for (int j = i + 1; j < str.length(); j++) {
if (carray[i] == carray[j]) {
System.out.print(carray[j] + "" "");
break;
}
}
}
}
}"