Error using split method in Codenameone

问题

I have created a new Codenameone project. It contains the following code:

String values = "one, two, tree";
String[] v = values.split(",");

When I build the project, I got this error:

location: variable definition of type String 
error: cannot find symbol
String[] v = values.split(",");
symbol:   method split(String)

However, if I take the sample project "MapsDemo" and use the split method, everything is ok.

What can be the problem?

Thanks.

回答1:

Codename One supports a subset of Java 5 and String.split() isn't there. Its much harder to change the VM implementation code across all platforms than just add a portable library in the codename one package space. Its also harder to make all the edge cases 100% compatible and it makes the executable larger (you pay for String.split even if you don't use it!).

We have StringUtils and StringTokenizer, there is also a regex package in the cn1lib section.

回答2:

Why don't you try this?

    import java.util.StringTokenizer;
    ... ...
    String fruits = "apple:pear:grape";
    String delimiter = ":";
    StringTokenizer fruitsTokenizer = new StringTokenizer(fruits, delimiter);
    while (fruitsTokenizer.hasMoreTokens()) {
            String fruit = fruitsTokenizer.nextToken();
            //
            // Do here something you want...
            //
    }

来源：https://stackoverflow.com/questions/25875676/error-using-split-method-in-codenameone