<center id="9kkkq"><del id="9kkkq"><thead id="9kkkq"></thead></del></center><ins id="9kkkq"></ins>

JAVA中字符串函數subString的用法小結

2019-11-26 15:42:33

字體：大中小

來源：轉載

供稿：網友

String str;
str＝str.substring(int beginIndex);截取掉str從首字母起長度為beginIndex的字符串，將剩余字符串賦值給str；

str＝str.substring(int beginIndex，int endIndex);截取str中從beginIndex開始至endIndex結束時的字符串，并將其賦值給str;

demo:

復制代碼代碼如下:

class Test 
{
 public static void main(String[] args) 
 {
  String s1 ="1234567890abcdefgh";
  s1 = s1.substring(10);
  System.out.println(s1);
 }
}

運行結果：abcdefgh

復制代碼代碼如下:

class Test 
{
 public static void main(String[] args) 
 {
  String s1 ="1234567890abcdefgh";
  s1 = s1.substring(0,9);
  System.out.println(s1);
 }
}

運行結果：123456789

下面是個典型例子：

復制代碼代碼如下:

public class StringDemo{

public static void main(String agrs[]){

   String str="this is my original string";

   String toDelete=" original";

   if(str.startsWith(toDelete))
    str=str.substring(toDelete.length());
   else
    if(str.endsWith(toDelete))
     str=str.substring(0, str.length()-toDelete.length());
    else
    {
     int index=str.indexOf(toDelete);
     if(index!=-1)
     {
      String str1=str.substring(0, index);
      String str2=str.substring(index+toDelete.length());
      str=str1+str2;
     }
     else
      System.out.println("string /""+toDelete+"/" not found");
    }
   System.out.println(str);
}
}