Writing Classes in AP Computer Science A

Static methods can access and change the values of static variables

Static methods cannot access or change the values of static variables

Static methods can change the values of static variables, but not access them

Static methods can access the values of static variables, but not change them

The constructor of the class.

An instance method of the class.

An instance variable of the class.

A static variable of the class.

The last modified value is reset once another object accesses it.

Both objects will observe the updated static field value.

Each object maintains its own version of the field, unaffected by others.

Only the first object accessing it retains changes while subsequent accesses show no change.

Instance-dependent behavior required, reacting differently depending on the specific object used to invoke it.

Cases involving purely computational tasks dealing with no internal states whatsoever.

Situations where a large number of common operations needed frequently updated information irrelevant to individual instances.

Circumstances demanding functionality uniformly applicable regardless of whichever entity calling.

When these methods heavily rely on accessing or modifying unique instance-specific data fields frequently

When enforcing consistency in behavior across all instances without regard for individual state differences.

When simplifying collective operations or calculations applied uniformly across all objects.

When these methods provide utility functionality not dependent on any state information of specific instances.

Changes result in new allocations making old references hold outdated values.

They create local copies for each instance hence changes are not visible across different objects.

All other instances observe identical changes as there's only one copy shared among them.

Other instances remain unaffected until they explicitly check for updates on shared resources.

To ensure that resources are released regardless of whether an exception was caught or not.

To prevent the compiled program from being executed if there are runtime errors detected.

To throw custom exceptions if the error is not handled in any preceding catch blocks.

To immediately stop further execution of the program if an exception occurs during operations.

The field can no longer be used within any methods in the code.

It's a constant that belongs to the entire class.

It's an unchangeable field unique to each instance of a class.

It becomes modifiable only once per instance created.

The variable will be initialized with a default value.

Compilation error

Runtime exception

The method returns null.

It requires an object to be instantiated before it can be used.

It can be called on a class rather than an instance of the class.

Its behavior changes every time it is called with different arguments.

It cannot access other static methods within its class.