int a;

}

class B {

int b;

}

class C {

public static void main(String[] args) {

System.out.print("HELLO!");

}

}

int a;

}

class B {

int b;

}

class C {

public static void main(String[] args) {

System.out.print("HELLO!");

}

}

public static void main(String args[]) {

String str = new String("World");

char[] ch = { 'H', 'e', 'l', 'l', 'o' };

change(str, ch);

System.out.println(str + " and " + new String(ch));

}

public static void change(String str, char ch[])

{

str="Changed"; ch[0]='C';

}

}
What is the result after execution?

System.out.println(fileName.lastIndexOf("."));

String str2 = str1.toLowerCase();

System.out.println(str2);

System.out.println(str1);

System.out.println(str1 == str2);

String str2="sdut";

System.out.println(str1.compareTo(str2)>0);

String str2="sDut12";

System.out.println(str1.equalsIgnoreCase(str2));

str.toUpperCase();

str.trim();

System.out.println(str);

String str2=str1.toUpperCase();

String str3=str1.toLowerCase();

System.out.println(str1==str2);

System.out.println(str1==str3);

str+="def";

String s2 = "Hell"+"o";

String s3 = "Hell";

s3 = s3+"o";
Which one below is correct?