Java String Split getUsedInputs(String expression)

Description

get Used Inputs

License

Open Source License

Declaration

public static String getUsedInputs(String expression) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static String getUsedInputs(String expression) {
        List<String> usedInputsList = new ArrayList<>();

        Pattern pattern = Pattern.compile("\\w+");
        Matcher matcher = pattern.matcher(expression);

        String currentString;//from w  ww .j a v a 2  s. c  om
        while (matcher.find()) {
            currentString = matcher.group();
            if (!usedInputsList.contains(currentString))
                usedInputsList.add(currentString);
        }
        Collections.sort(usedInputsList);

        return String.join(" ", usedInputsList);
    }
}

Related

1. getInputs(String str)
2. getParameters(String[] split)
3. recursiveSplit(String str, String splitor)
4. safeSplitParameters(String parameters)
5. split(byte[] bytes, byte[] p)
6. split(byte[] data)