Not sure what a try catch is? We explain how to use a try catch block in Java and how to write methods that throw exceptions.

Fatal Exception: java.lang.NullPointerException Attempt to invoke virtual method 'int java.lang.String.length ()' on a null object reference #43 ...

Exception in thread "main" java.io.FileNotFoundException: Report.PDF (The system cannot find the file specified) at java.io.FileInputStream.open(Native Method) ...

String[] data = new String[5]; data[5] = "More Data"; The inability of an array to dynamically resize to fit additional elements is a common runtime exception in Java, especially for developers who ...

The Java array length property does not have round brackets after the field. The Java String length () method does. Confusion here will cause compile time errors, so be careful.