Replace All Spaces in a String
trim()
Removes only the leading & trailing spaces.
From Java Doc,
"Returns a string whose value is this string, with any leading and trailing whitespace removed."
System.out.println(" D ev Dum my ".trim());
"D ev Dum my"
replace(), replaceAll()
Replaces all the empty strings in the word,
System.out.println(" D ev Dum my ".replace(" ",""));
System.out.println(" D ev Dum my ".replaceAll(" ",""));
System.out.println(" D ev Dum my ".replaceAll("\\s+",""));
"DevDummy"
"DevDummy"
"DevDummy"
Note: "\\s+" is the regular expression similar to the empty space character.
Reference
https://docs.oracle.com/javase/7/docs/api/java/lang/String.html...
