Replacing a character by another character in a string in android?

Strings are immutable in Java - replace doesn't change the existing string, it returns a new one. You want:

str = str.replace(' ','_');

(This is definitely a duplicate, but I don't have enough time right now to find an appropriate one...)

java android replace special-characters

String is immutable and you cannot change it. So, you need to do this:

str = str.replace(' ','_');

java android replace special-characters

See code:

et = (EditText) findViewById(R.id.editText1);String str = et.getText().toString();str = str.replace(' ', '_');System.out.println(str);

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