StringIndexOutOfBoundsException in JavaIn Java, a StringIndexOutOfBoundsException is a runtime exception when you try to access a character in a String at an invalid index. Attempting to access a character at an index that is either negative or outside the range of the String's length causes this exception to be thrown. For example, if you have a String variable called myString with a value of "Hello", trying to access myString.charAt(5) will result in a StringIndexOutOfBoundsException because the index 5 is out of bounds (valid indices for this String would be 0 through 4). You can handle this exception using a try-catch block. The catch block can then handle the exception and provide an appropriate error message to the user. Causes StringIndexOutOfBoundsExceptionIn Java, several methods can throw a StringIndexOutOfBoundsException when invalid specified arguments are used. Here are some examples:
StringIndexOutOfBoundsException ExampleFilename: StringIndexOutOfBoundsExceptionExample.java Output: Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin 2, end 8, length 7 at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3319) at java.base/java.lang.String.substring(String.java:1874) at StringIndexOutOfBoundsExceptionExample.main(StringIndexOutOfBoundsExceptionExample.java:4) Explanation: In this example, the substring() method is called on a String with a specified beginIndex of 2 and endIndex of 8, which is out of bounds since the String only has a length of 7 (indices range from 0 to 6). As a result, the substring() method throws a StringIndexOutOfBoundsException. Handling StringIndexOutOfBoundsExceptionAs the StringIndexOutOfBoundsException is a Java exception, the following steps may be utilized to manage it with try-catch blocks:
Filename: StringIndexOutOfBoundsExceptionExample.java Output: String index is out of bounds: begin 2, end 8, length 7 Explanation: In this example, the substring() method is called on a String with specified indices of 2 and 8, which are out of bounds. The code within the try block is executed, and when the StringIndexOutOfBoundsException is thrown, it is caught by the catch block. Within the catch block, an error message is logged to the console. Depending on the application's requirements, you could take different actions within the catch block, such as setting a default value for the substring or prompting the user to enter valid indices.
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