提取字符串指定的内容

package com.tszr;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test {
    public static void main(String[] args) {
        String str = "[003][002][004][006]";
        Pattern pattern = Pattern.compile("(\\d+)");
        Matcher matcher = pattern.matcher(str);
        while (matcher.find()) {
            System.out.println(matcher.group(1));
        }
    }
}