从字符串中删除字符

Question

Say have a string:

String x = "0: 0->1 -2.00";

And I want to remove certain characters, specifically : : > and a few others so that string is now:

0 1 -2.00

Is there a simple way to do this?

Answer 1

To remove just one type of character, you can do this.

myString = myString.replace(":", "");

For more complicated cases, you might need a regular expression, in which case, you'll use replaceAll instead of replace , but you have to be careful about escaping any characters that are "special" in a regular expression.

myString = myString.replaceAll("->|:", "");

As an example, if you wanted to remove -> and : and + , you might write

myString = myString.replaceAll("->|:|\\+", "");

because + is special and needs to be escaped with a backslash.

Answer 2

  x = x.replace(":", "");
  x = x.replace("->", "");