CDE

Task/Exceptions/Java/exceptions-1.java

@@ -0,0 +1,7 @@
+//Checked exception
+public class MyException extends Exception {
+   //Put specific info in here
+}
+
+//Unchecked exception
+public class MyRuntimeException extends RuntimeException {}

Task/Exceptions/Java/exceptions-2.java

@@ -0,0 +1,7 @@
+public void fooChecked() throws MyException {
+   throw new MyException();
+}
+
+public void fooUnchecked() {
+   throw new MyRuntimeException();
+}

Task/Exceptions/Java/exceptions-3.java

@@ -0,0 +1,15 @@
+try {
+   fooChecked();
+}
+catch(MyException exc) {
+   //Catch only your specified type of exception
+}
+catch(Exception exc) {
+   //Catch any non-system error exception
+}
+catch(Throwable exc) {
+   //Catch everything including system errors (not recommended)
+}
+finally {
+   //This code is always executed after exiting the try block
+}

Task/Exceptions/Java/exceptions-4.java

@@ -0,0 +1,13 @@
+public void foo() throws UnsupportedDataTypeException{
+    try{
+        throwsNumberFormatException();
+        //the following methods throw exceptions which extend IOException
+        throwsUnsupportedDataTypeException();
+        throwsFileNotFoundException();
+    }catch(FileNotFoundException | NumberFormatException ex){
+        //deal with these two Exceptions without duplicating code
+    }catch(IOException e){
+        //deal with the UnsupportedDataTypeException as well as any other unchecked IOExceptions
+        throw e;
+    }
+}