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public class Main {
public static void main (String[] args) {
Set var1 = new HashSet();
Set var2 = new HashSet();
var2.add "Hi there!");
System.out.println (var2);
var1.add (“Hello Folks!”);
System.out.println (var1);
var2 = var1;
var2.add (“It’s great to be a set!”);
System.out.println (var1);
var1 = null;
System.out.println (var1);
System.out.println (var2);
System.out.println (new HashSet().size());
}
}
 

Main.java:5: error: not a statement
var2.add "Hi there!");
    ^
Main.java:5: error: ';' expected
var2.add "Hi there!");
        ^
Main.java:7: error: illegal character: '\u201c'
var1.add (?Hello Folks!?);
          ^
Main.java:7: error: ';' expected
var1.add (?Hello Folks!?);
           ^
Main.java:7: error: not a statement
var1.add (?Hello Folks!?);
                 ^
Main.java:7: error: ';' expected
var1.add (?Hello Folks!?);
                      ^
Main.java:7: error: illegal character: '\u201d'
var1.add (?Hello Folks!?);
                       ^
Main.java:10: error: illegal character: '\u201c'
var2.add (?It?s great to be a set!?);
          ^
Main.java:10: error: ';' expected
var2.add (?It?s great to be a set!?);
           ^
Main.java:10: error: illegal character: '\u2019'
var2.add (?It?s great to be a set!?);
             ^
Main.java:10: error: ';' expected
var2.add (?It?s great to be a set!?);
               ^
Main.java:10: error: ';' expected
var2.add (?It?s great to be a set!?);
                        ^
Main.java:10: error: ';' expected
var2.add (?It?s great to be a set!?);
                             ^
Main.java:10: error: not a statement
var2.add (?It?s great to be a set!?);
                              ^
Main.java:10: error: ';' expected
var2.add (?It?s great to be a set!?);
                                 ^
Main.java:10: error: illegal character: '\u201d'
var2.add (?It?s great to be a set!?);
                                  ^
16 errors

Standard output is empty