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import java.util.*; 
 
class GFG { 
 
    // The main function that prints the  
    // arrangement with the largest value. 
    // The function accepts a vector of strings     
    static void printLargest(Vector<String> arr){ 
 
        Collections.sort(arr, new Comparator<String>(){ 
 
        // A comparison function which is used by  
        // sort() in printLargest() 
        @Override
        public int compare(String X, String Y) { 
 
        // first append Y at the end of X 
        String XY=X + Y; 
 
        // then append X at the end of Y 
        String YX=Y + X; 
 
        // Now see which of the two formed numbers  
        // is greater 
        return XY.compareTo(YX) > 0 ? -1:1; 
    } 
    }); 
 
    Iterator it = arr.iterator(); 
 
    while(it.hasNext()) 
        System.out.print(it.next()); 
 
    } 
 
    // driver program 
    public static void main (String[] args) { 
 
        Vector<String> arr; 
        arr = new Vector<>(); 
 
        //output should be 6054854654 
        arr.add("54"); 
        arr.add("546"); 
        arr.add("548"); 
        arr.add("60"); 
        printLargest(arr); 
 
        // output should be 777776 
        /* arr.add("7"); 
        arr.add("776"); 
        arr.add("7"); 
        arr.add("7"); 
        */
 
        //output should be 998764543431 
        /*arr.add("1"); 
        arr.add("34"); 
        arr.add("3"); 
        arr.add("98"); 
        arr.add("9"); 
        arr.add("76"); 
        arr.add("45"); 
        arr.add("4"); 
        */
    } 
} 

prog.cpp:14:9: error: stray ‘@’ in program
         @Override
         ^
prog.cpp:1:1: error: ‘import’ does not name a type
 import java.util.*;
 ^~~~~~
prog.cpp:8:30: error: ‘Vector’ has not been declared
     static void printLargest(Vector<String> arr){
                              ^~~~~~
prog.cpp:8:36: error: expected ‘,’ or ‘...’ before ‘<’ token
     static void printLargest(Vector<String> arr){
                                    ^
prog.cpp:37:12: error: expected ‘:’ before ‘static’
     public static void main (String[] args) {
            ^~~~~~
prog.cpp:37:30: error: ‘String’ has not been declared
     public static void main (String[] args) {
                              ^~~~~~
prog.cpp:37:39: error: expected ‘,’ or ‘...’ before ‘args’
     public static void main (String[] args) {
                                       ^~~~
prog.cpp:67:1: error: expected ‘;’ after class definition
 }
 ^
prog.cpp: In static member function ‘static void GFG::printLargest(int)’:
prog.cpp:10:9: error: ‘Collections’ was not declared in this scope
         Collections.sort(arr, new Comparator<String>(){
         ^~~~~~~~~~~
prog.cpp:10:26: error: ‘arr’ was not declared in this scope
         Collections.sort(arr, new Comparator<String>(){
                          ^~~
prog.cpp:10:35: error: ‘Comparator’ does not name a type
         Collections.sort(arr, new Comparator<String>(){
                                   ^~~~~~~~~~
prog.cpp:10:46: error: ‘String’ was not declared in this scope
         Collections.sort(arr, new Comparator<String>(){
                                              ^~~~~~
prog.cpp:10:54: error: expected primary-expression before ‘)’ token
         Collections.sort(arr, new Comparator<String>(){
                                                      ^
prog.cpp:29:5: error: ‘Iterator’ was not declared in this scope
     Iterator it = arr.iterator();
     ^~~~~~~~
prog.cpp:31:11: error: ‘it’ was not declared in this scope
     while(it.hasNext())
           ^~
prog.cpp:32:9: error: ‘System’ was not declared in this scope
         System.out.print(it.next());
         ^~~~~~
prog.cpp: In static member function ‘static void GFG::main(int*)’:
prog.cpp:39:9: error: ‘Vector’ was not declared in this scope
         Vector<String> arr;
         ^~~~~~
prog.cpp:39:16: error: ‘String’ was not declared in this scope
         Vector<String> arr;
                ^~~~~~
prog.cpp:39:24: error: ‘arr’ was not declared in this scope
         Vector<String> arr;
                        ^~~
prog.cpp:40:19: error: ‘Vector’ does not name a type
         arr = new Vector<>();
                   ^~~~~~
prog.cpp:40:26: error: expected primary-expression before ‘>’ token
         arr = new Vector<>();
                          ^
prog.cpp:40:28: error: expected primary-expression before ‘)’ token
         arr = new Vector<>();
                            ^

Standard output is empty