throw io exception java
public static void foo() throws IOException {
// some code here, when something goes wrong, you might do:
throw new IOException("error message");
}
public static void main(String[] args) {
try {
foo();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}what is exception in java
In java exception is an object. Exceptions are created when an abnormal
situations are arised in our program. Exceptions can be created by JVM or
by our application code. All Exception classes are defined in java.lang.
In otherwords we can say Exception as run time error.what is exception in java
An exception is an event, which occurs during the execution of a
program, that disrupts the normal flow of the program's instructions.exception java
1.Unchecked: occurs during run time
2.Checked Exceptions:occurs during the compile time.
needs to be handled IMMEDIATELY
Exception handling: try & catch: blocks, used for handling the exception
throws keyword is used within the method signature
disadvantage is: throws keyword whoever calls the method
will have to handle the exception again but with
try/catch you handle once. Try/catch is better way to handle it
in utility class. Next time you call method you don’t get any exceptions
most common Exception like NullPointerExceptio,
ArrayIndexOutOfBound, ClassNotFoundException, IOException.
are unchecked and they are descended from java.lang.RuntimeException
In Selenium: nosuchelement, nostaleexception, nosuchaframe
In SQL: SQL exceptionwhat is ioexception in java
IOException is a Java exception which occurs when an IO(input/output)
operations fails.Copyright © 2021 Codeinu
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