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java字符串截取

import org.apache.commons.lang.StringUtils;

public class substr{
    public static void main(String[] args) {
        String str = "1234567890ABCDEFG";
        System.out.println("-----------" + str.substring(0)); //从字符串索引为0开始截取，一直到字符串末尾
        System.out.println("-----1------" + str.substring(6,7)); //从索引6开始到索引7结束（不包含索引7，实际截取的是"7"）
        System.out.println("-----2------" + str.substring(str.length()-3, str.length()-1));
        System.out.println("-----3------" + str.substring(0, str.indexOf("4")));
        System.out.println("-----4------" + str.substring(str.indexOf("4") + 1, str.length()));
        System.out.println("-----5------" + str.substring(str.indexOf("4"), str.indexOf("F")));

        String strs = "0899991003535197";
        System.out.println("===========" + strs.substring(6, strs.length()));
        System.out.println("=====1======" + strs.substring(0, 2));
        System.out.println("=====2======" + StringUtils.substringBefore(strs, "3"));
        System.out.println("=====3======" + StringUtils.substringBeforeLast(strs, "3"));
        System.out.println("=====4======" + StringUtils.substringAfter(strs, "3"));
        System.out.println("=====5======" + StringUtils.substringAfterLast(strs, "3"));

        String str1 = "as,asd,df,asd,efd,asd";
        String [] list1 = str1.split(",");
        for(int i=0;i<list1.length;i++)
        {
            System.out.println("第"+(i+1)+"个元素为："+list1[i]);
        }
    }
}

运行结果：

-----------1234567890ABCDEFG

-----1------7

-----2------EF

-----3------123

-----4------567890ABCDEFG

-----5------4567890ABCDE

===========1003535197

=====1======08

=====2======089999100

=====3======08999910035

=====4======535197