replace(int startIndex, int endIndex, String str) StringBuilder method in java

replace(int startIndex, int endIndex, String str): replace the substring of the string builder from startIndex to endIndex-1 with specified string.

Syntax:

public StringBuilder replace(int startIndex, int endIndex, String str)

Note: startIndex should be between 0 to length of string or less than endIndex, if it is not StringIndexOutOfBoundsException will be thrown.

Example:

StringBuilderReplaceExample.java

/**
 * This program is used to show the use of replace() method.
 * @author w3spoint
 */
class TestStringBuilder{
	StringBuilder sb = new StringBuilder("www.abc.com");
 
	/**
	 * This method is used to show the use of replace() method.
	 * @author w3spoint
	 */
	public void replaceTest(){
		//replace the substring of the string buffer from 
		//startIndex to endIndex-1 with specified string.
		System.out.println(sb.replace(4,7,"w3spoint"));
	}
}
 
public class StringBuilderReplaceExample {
	public static void main(String args[]){
		//creating TestStringBuilder object
		TestStringBuilder obj = new TestStringBuilder();
 
		//method call
		obj.replaceTest();
	}
}

Output:

www.w3spoint.com

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