String greeting = "Hello world!";

public class StringDemo {
   public static void main(String args[]) {
      char[] helloArray = { 'h', 'e', 'l', 'l', 'o', '.' };
      String helloString = new String(helloArray);  
      System.out.println(helloString);
   }
}
//hello.

public class testImmutableString {
    public static void main(String args[]) {
        String s = "salam ";
        s.concat("Java");
        //concat() method appends the string at the end
        System.out.println(s);
   }
}
//will print Sachin because strings are immutable objects.

System.out.printf("The value of the float variable is " +
                  "%f, while the value of the integer " +
                  "variable is %d, and the string " +
                  "is %s", floatVar, intVar, stringVar);

String fs;
fs = String.format("The value of the float variable is " +
                   "%f, while the value of the integer " +
                   "variable is %d, and the string " +
                   "is %s", floatVar, intVar, stringVar);
System.out.println(fs);

String S = "Salam\\ Ok\' Bye\"";
System.out.println(s);
 
//Salam\ Ok ' Bye"