indexof

public class IndexOfExample{  
public static void main(String args[]){  
String s1="this is index of example";  
//passing substring  
int index1=s1.indexOf("is");//returns the index of is substring  
int index2=s1.indexOf("index");//returns the index of index substring  
System.out.println(index1+"  "+index2);//2 8  
  
//passing substring with from index  
int index3=s1.indexOf("is",4);//returns the index of is substring after 4th index  
System.out.println(index3);//5 i.e. the index of another is  
  
//passing char value  
int index4=s1.indexOf('s');//returns the index of s char value  
System.out.println(index4);//3  
}}