Java StringBuffer.substring(int start, int end)方法，

来源： javaer 分享于 2019-06-07 点击 33411 次点评：114

Java StringBuffer.substring(int start, int end)方法，

Java StringBuffer.substring(int start, int end)方法

Java StringBuffer.substring(int start, int end)方法用法实例教程,返回一个新的String，它包含了目前这个序列中包含的字符序列。 <iframe id="cproIframe_u1064372_1" width="728" height="90" src="http://pos.baidu.com/acom?adn=3&at=38&aurl=&cad=1&ccd=24&cec=UTF-8&cfv=17&ch=0&col=zh-CN&conOP=0&cpa=1&dai=1&dis=0&ltr=https%3A%2F%2Fwww.baidu.com%2Flink%3Furl%3D4ZBUfLY6Ig0T8Rg0a8n_nb3s0LL98V4y8wPyqlgmVkljlYKMSu3TenO4G-p57p_Kj6eeb4D1qvpOtSABPkAZra1myDow4QtYtlBtt2vFING%26wd%3D%26eqid%3Ddb0fdd1700039ff100000005555d9e0f%26ie%3Dutf-8&ltu=http%3A%2F%2Fwww.yiibai.com%2Fjavalang%2Fstringbuilder_substring_end.html&lunum=6&n=90029059_cpr&pcs=714x490&pis=10000x10000&ps=374x297&psr=1440x900&pss=1080x1472&qn=716e3f3552a5c36b&rad=&rsi0=728&rsi1=90&rsi5=4&rss0=%23FFFFFF&rss1=%23FFFFFF&rss2=%230000FF&rss3=%23444444&rss4=%23008000&rss5=&rss6=%23e10900&rss7=&scale=&skin=&td_id=1064372&tn=text_default_728_90&tpr=1432198720557&ts=1&version=2.0&xuanting=0&dtm=BAIDU_DUP2_SETJSONADSLOT&dc=2&di=u1064372&ti=Java%20StringBuffer.substring(int%20start%2C%20int%20end)%E6%96%B9%E6%B3%95&tt=1432198720542.17.671.675" align="center,center" marginwidth="0" marginheight="0" scrolling="no" frameborder="0" allowtransparency="true" ></iframe>

描述

java.lang.StringBuilder.substring(int start, int end) 方法返回一个新的String，它包含了目前这个序列中包含的字符序列。子字符串的start在指定的起始和延伸处的字符索引 end - 1.

声明

以下是java.lang.StringBuilder.substring()方法的声明

public String substring(int start, int end)

参数

start -- This is the beginning index, inclusive.
end -- This is the ending index, exclusive.

返回值

此方法返回新的字符串.

异常

StringIndexOutOfBoundsException -- 如果开始或结束为负或大于length()，或开始大于end.

实例

下面的例子显示使用的java.lang.StringBuilder.substring()方法.

package com.yiibai;

import java.lang.*;

public class StringBuilderDemo {

  public static void main(String[] args) {
  
    StringBuilder str = new StringBuilder("admin");
    System.out.println("string = " + str);

    // prints substring from index 3
    System.out.println("substring is = " + str.substring(3));

    /* prints substring from index 1 to 4 excluding character
    at 4th index */
    System.out.println("substring is = " + str.substring(1, 4));
  }
}

让我们来编译和运行上面的程序，这将产生以下结果：

string = admin
substring is = in
substring is = dmi

Java StringBuffer.substring(int start, int end)方法，

Java StringBuffer.substring(int start, int end)方法，

Java StringBuffer.substring(int start, int end)方法

描述

声明

参数

返回值

异常

实例

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