What is the difference between strings allocated using new operator & without new operator in java J2ME?

Question

what is the Difference between

String str=new String(\"Thamilan\");

and

String str=\"Thamilan\";

in java

Answer 1

The difference is that the new String creates a new object with the same value as the literal passed in:

    String s = "abc";
    String t = new String("abc");

    System.out.println(s==t); //false

    String u = "abc";
    String v = "abc";

    System.out.println(u==v);  //true

This is because the literal are always from the internal pool.

You might want to look at the intern method - here is its description:

Returns a canonical representation for the string object. A pool of strings, initially empty, is maintained privately by the class String. When the intern method is invoked, if the pool already contains a string equal to this String object as determined by the equals(Object) method, then the string from the pool is returned. Otherwise, this String object is added to the pool and a reference to this String object is returned. It follows that for any two strings s and t, s.intern() == t.intern() is true if and only if s.equals(t) is true. All literal strings and string-valued constant expressions are interned. String literals are defined in §3.10.5 of the Java Language Specification