Home Java String-examples String indexOf(String str)

String indexOf(String str)
Posted on: August 21, 2007 at 12:00 AM

In this section, you will get the detailed explanation about the indexOf(String str) method of String class.

String indexOf(String str)

In this section, you will get the detailed explanation about the indexOf(String str) method of String class. We are going to use indexOf(String str) method of String class in Java. The description of the code is given below for the usage of the method.

Description of the code:

Here, you will get to know about the indexOf(String str) method through the following java program. In the program code given below, we have taken a String. To find the index of a Substring from a String, we have applied indexOf(String str); method and then we have passed the Substring from the specified String in that to find its index as shown in the output.

NOTE: This method returns the index of the first occurrence of the given substring within the string.

Here is the code of the program:


public class StringValue {

  public static void main(String args[]) {

  String s = "That was the breaking News";

  System.out.println(s);

  System.out.println("indexOf(the) -> " + s.indexOf("break"));

  }

  }

Output of the program:

C:\unique>javac StringValue.java

C:\unique>java StringValue
That was the breaking News
indexOf(the) -> 13

C:\unique>

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