How can I delete the last two characters 05
of the simple string?
Simple:
"apple car 05"
Code
String[] lineSplitted = line.split(":");
String stopName = lineSplitted[0];
String stop = stopName.substring(0, stopName.length() - 1);
String stopEnd = stopName.substring(0, stop.length() - 1);
orginal line before splitting ":"
apple car 04:48 05:18 05:46 06:16 06:46 07:16 07:46 16:46 17:16 17:46 18:16 18:46 19:16
Subtract -2
or -3
basis of removing last space also.
public static void main(String[] args) {
String s = "apple car 05";
System.out.println(s.substring(0, s.length() - 2));
}
Output
apple car
You can use substring
function:
s.substring(0,s.length() - 2));
With the first 0
, you say to substring
that it has to start in the first character of your string and with the s.length() - 2
that it has to finish 2 characters before the String ends.
For more information about substring
function you can see here:
http://docs.oracle.com/javase/7/docs/api/java/lang/String.html
Use String.substring(beginIndex, endIndex)
str.substring(0, str.length() - 2);
The substring begins at the specified beginIndex and extends to the character at index (endIndex - 1)
You may also try the following code with exception handling. Here you have a method removeLast(String s, int n)
(it is actually an modified version of masud.m's answer). You have to provide the String
s and how many char
you want to remove from the last to this removeLast(String s, int n)
function. If the number of char
s have to remove from the last is greater than the given String
length then it throws a StringIndexOutOfBoundException
with a custom message -
public String removeLast(String s, int n) throws StringIndexOutOfBoundsException{
int strLength = s.length();
if(n>strLength){
throw new StringIndexOutOfBoundsException("Number of character to remove from end is greater than the length of the string");
}
else if(null!=s && !s.isEmpty()){
s = s.substring(0, s.length()-n);
}
return s;
}
It was almost correct just change your last line like:
String stopEnd = stop.substring(0, stop.length() - 1); //replace stopName with stop.
OR
you can replace your last two lines;
String stopEnd = stopName.substring(0, stopName.length() - 2);
An alternative solution would be to use some sort of regex
:
for example:
String s = "apple car 04:48 05:18 05:46 06:16 06:46 07:16 07:46 16:46 17:16 17:46 18:16 18:46 19:16";
String results= s.replaceAll("[0-9]", "").replaceAll(" :", ""); //first removing all the numbers then remove space followed by :
System.out.println(results); // output 9
System.out.println(results.length());// output "apple car"
You may use the following method to remove last n
character -
public String removeLast(String s, int n) {
if (null != s && !s.isEmpty()) {
s = s.substring(0, s.length()-n);
}
return s;
}
Source: Stackoverflow.com