JAVA中字符串函数subString的用法小结
本篇文章主要是对JAVA中字符串函数subString的用法进行了详细的介绍,需要的朋友可以过来参考下,希望对大家有所帮助
String str; str=str.substring(int beginIndex);截取掉str从首字母起长度为beginIndex的字符串,将剩余字符串赋值给str;
str=str.substring(int beginIndex,int endIndex);截取str中从beginIndex开始至endIndex结束时的字符串,并将其赋值给str;
demo:
运行结果:abcdefgh
运行结果:123456789
下面是个典型例子:
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); } }
运行结果: this is my string