needs explanation for the output

[Venkat Ramsimha]

public class StringRef
{
public static void main(String [] args)
{
String s1 = "abc";
String s2 = "def";
String s3 = s2;
s2 = "ghi";
System.out.println(s1 + s2 + s3);
}

}

OUTPUT:abcghidef

why for the above program the output is not "abcghighi"
can anybody provide the explanation for the above?

thanks&cheers
venkat

[udhaya kanagaraj]

hai venkatramsimha ,

 
public class StringRef 
{
public static void main(String [] args) 
{
String s1 = "abc";\\1
String s2 = "def";\\2
String s3 = s2;\\3
s2 = "ghi";\\4
System.out.println(s1 + s2 + s3);
}
 
}
 
 

In the code,
line 1 : String abc assign to s1
line 2 : String def assign to s2
line 3 : s3 also now pointing to def
line 4 : s2 now pointing to ghi(but still s3 points to def)

So it prints abcghidef






s3=s2;
means we r assinging the s2 reference to s3 ie,now s3 contain "def"
so s2 is pointing nothing,then s2 is assined with some other string

[Raghu Shree]

Hi,
In Line 1 s2 point s "def", Line 2 s3 points "def" because s2 has a reference value of string object "def". So s3 also point to "def" in Line 3 you change the reference value of s2. It point to the object "ghi". So s3 reference values are not updated here. So output is abcghidef.