String to Char Array and Char array to String Conversion

In my program I am getting a string from Database result set and convert it to char array like this:

emp.nid = rs.getString("nid").toCharArray();

In this part there is no error. The String is successfully converted to char array. B开发者_运维百科ut I have another code like this:

nid_txt.setText(emp.nid.toString());

This prints some freaky text. Not the original. Why was this happens? Please help me.

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You're calling toString on a char[] - and that inherits the implementation from Object, so you get the char[].class name, @ and then the hash of the object. Instead, call the String(char[]) constructor:

nid_txt.setText(new String(emp.nid));

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This happens because the toString() method is the String representation of the object, and not the String of what it contains.

Try doing like this:

nid_txt.setText(new String(emp.nid));

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instead of foo.toString() do new String(foo).

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You are calling the toString() on the array object. Try:

new String(emp.nid);

and you should see better results.

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assuming that emp.nid is byte array second sentence is completely wrong. toString() method in such object won't work. Try insted creating new String based on byte array:

String s = new String(emp.nid);
nid_txt.setText(s);