What is the difference between the throw statement and the throws clause?

throw and throws represent different constructs in Java programming language.

Explanation:

throw is used to explicitly throw an Exception from within a code segment.

For example:

public void throw_test(String str){

        if(str==null) throw new NullPointerException();

}

throws is used to specify an exception list which may be thrown by a method:

For example:

public String readFromFile(File f) throws IOException {

// Some code fragment which could throw a IOException

}