Eleminate a char in String java

Question

how can i eleminate the last ,| in this String :

String model ="07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40,|";

model is variable String , and the result should like that :

String result="07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40";

Answer 1

If it's always ,| and you don't know if it will be present use replaceFirst :

model = model.replaceFirst(",\\|$", "");

PS $ stands for end of String

Answer 2

   String model ="07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40,|";
   String result = model.substring(0, model.length() -2);
   System.out.println(result);

javadoc : substring(int beginIndex, int endIndex) : Returns a new string that is a substring of this string.

Answer 3

If this always shows up you can cut the end of the string. To do that you can do use this code:

result = model.substring(0, path.length() - 2);

If it only happens sometimes, you can do this:

if (model.substring(path.length - 2, path.length).equals(",|")) {
    result = model.substring(0, path.length() - 2);
} else {
    result = model
}

Answer 4

Try StringUtils :

import org.apache.commons.lang3.StringUtils;

// model = "07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40,|"
model = StringUtils.removeEnd(model, ",|");
// Now 
// model = "07:40,09:00,10:20,11:40,|09:00,10:20,11:40,|07:40,09:00,10:20,11:40,|10:20,11:40";

Answer 5

String correctedModel=new StringBuilder(model).deleteCharAt(model.lastIndexOf('|')).toString();

检查docs StringBuilder.deleteChartAt（）和String.lastIndexOf（）