JAVA中字串函數subString的用法小結

String str;
str＝str.substring(int beginIndex);截取掉str從首字母起長度為beginIndex的字串，將剩餘字串賦值給str；

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

demo:

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

運行結果：abcdefgh

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

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);
}
}

rrreee

運行結果：abcdefgh

rrreee

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運行結果：abcdefgh

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rr 🎜運行結果：🎜this is my string🎜🎜更多JAVA中字符串函數subString的用法小結相關文章請關注PHP中文網！ 🎜