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());
}
}public class MyClass {
public static void main(String[ ] args) {
try {
int[] myNumbers = {1, 2, 3, 4, 5, 6};
System.out.println(myNumbers[10]);
} catch (Exception e) {
System.out.println("Something went wrong. check again");
}
}
}
- ArithmeticException
It is thrown when an exceptional condition has occurred in an arithmetic operation.
- ArrayIndexOutOfBoundsException
It is thrown to indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the array.
- ClassNotFoundException
This Exception is raised when we try to access a class whose definition is not found
- FileNotFoundException
This Exception is raised when a file is not accessible or does not open.
- IOException
It is thrown when an input-output operation failed or interrupted
- InterruptedException
It is thrown when a thread is waiting, sleeping, or doing some processing, and it is interrupted.
- NoSuchFieldException
It is thrown when a class does not contain the field (or variable) specified
- NoSuchMethodException
It is thrown when accessing a method which is not found.
- NullPointerException
This exception is raised when referring to the members of a null object. Null represents nothing
- NumberFormatException
This exception is raised when a method could not convert a string into a numeric format.
- RuntimeException
This represents any exception which occurs during runtime.
- StringIndexOutOfBoundsException
It is thrown by String class methods to indicate that an index is either negative or greater than the size of the stringpublic class JavaExceptionExample{
public static void main(String args[]){
try{
//code that may raise exception
int data=100/0;
}catch(ArithmeticException e){System.out.println(e);}
//rest code of the program
System.out.println("rest of the code...");
}
} public class JavaExceptionExample extends Exception{
public JavaExceptionExample(){
}
public JavaExceptionExample(String s){
//String parameter which is the detail message of the exception.
}
} Exception is an abnormal condition.
There are mainly two types of exceptions: checked and unchecked.
An error is considered as the unchecked exception. However, according to Oracle,
there are three types of exceptions namely:
1. Checked Exception
2. Unchecked Exception
3. Error