Calling Class Methods - AP Computer Science A
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What are the parameters of the main method in Java?
What are the parameters of the main method in Java?
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String[] args. Command-line arguments passed to program.
String[] args. Command-line arguments passed to program.
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Can a static method call another static method?
Can a static method call another static method?
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Yes, it can. Static methods can invoke other static methods directly.
Yes, it can. Static methods can invoke other static methods directly.
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Can a static method be overloaded?
Can a static method be overloaded?
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Yes, it can. Multiple static methods can have same name, different parameters.
Yes, it can. Multiple static methods can have same name, different parameters.
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Can a static method access a static variable?
Can a static method access a static variable?
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Yes, it can. Static methods can access other static members.
Yes, it can. Static methods can access other static members.
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Identify the error: static int calculate() return 0;
Identify the error: static int calculate() return 0;
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Missing curly braces. Method body requires braces around statements.
Missing curly braces. Method body requires braces around statements.
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Can a static method be abstract?
Can a static method be abstract?
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No, it cannot. Abstract requires overriding, but static prevents inheritance.
No, it cannot. Abstract requires overriding, but static prevents inheritance.
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What type of methods can be called without creating an object?
What type of methods can be called without creating an object?
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Static methods. Class methods don't require object instantiation.
Static methods. Class methods don't require object instantiation.
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Identify the error: public void static print() {}
Identify the error: public void static print() {}
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Incorrect order; should be public static void print() {}. Modifiers must follow specific order: access, static, return.
Incorrect order; should be public static void print() {}. Modifiers must follow specific order: access, static, return.
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How do you call a static method from a different package?
How do you call a static method from a different package?
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Import the class, then call ClassName.methodName();. Import statement provides access to external classes.
Import the class, then call ClassName.methodName();. Import statement provides access to external classes.
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What is the signature of the main method in Java?
What is the signature of the main method in Java?
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public static void main(String[] args). Required format for Java application entry point.
public static void main(String[] args). Required format for Java application entry point.
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Which method is called automatically when a Java program starts?
Which method is called automatically when a Java program starts?
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main method. Entry point for Java program execution.
main method. Entry point for Java program execution.
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Identify the error: static void display() { this.show(); }
Identify the error: static void display() { this.show(); }
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Cannot use 'this' in a static method. 'this' refers to instance, not available in static context.
Cannot use 'this' in a static method. 'this' refers to instance, not available in static context.
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What keyword is used to define a class method?
What keyword is used to define a class method?
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static. Makes method belong to class rather than instances.
static. Makes method belong to class rather than instances.
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How do you call a static method from a class?
How do you call a static method from a class?
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ClassName.methodName();. Uses dot notation with class name, no object needed.
ClassName.methodName();. Uses dot notation with class name, no object needed.
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Can a static method have a return type?
Can a static method have a return type?
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Yes, it can. Static methods can return values like any method.
Yes, it can. Static methods can return values like any method.
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Can a static method be overloaded?
Can a static method be overloaded?
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Yes, it can. Multiple static methods can have same name, different parameters.
Yes, it can. Multiple static methods can have same name, different parameters.
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Can a static method have a return type?
Can a static method have a return type?
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Yes, it can. Static methods can return values like any method.
Yes, it can. Static methods can return values like any method.
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What is the result of calling a non-static method using the class name?
What is the result of calling a non-static method using the class name?
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Compilation error. Non-static methods require an instance to be called.
Compilation error. Non-static methods require an instance to be called.
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State the syntax for calling a static method in Java.
State the syntax for calling a static method in Java.
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ClassName.methodName();. Standard format for accessing class-level methods.
ClassName.methodName();. Standard format for accessing class-level methods.
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Can static methods be overridden?
Can static methods be overridden?
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No, they can be hidden but not overridden. Static methods are resolved at compile-time, not runtime.
No, they can be hidden but not overridden. Static methods are resolved at compile-time, not runtime.
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What are the parameters of the main method in Java?
What are the parameters of the main method in Java?
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String[] args. Command-line arguments passed to program.
String[] args. Command-line arguments passed to program.
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What is the scope of a static method?
What is the scope of a static method?
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Class level. Belongs to the class, shared across all instances.
Class level. Belongs to the class, shared across all instances.
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Can a static method be abstract?
Can a static method be abstract?
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No, it cannot. Abstract requires overriding, but static prevents inheritance.
No, it cannot. Abstract requires overriding, but static prevents inheritance.
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How do you call the main method of another class?
How do you call the main method of another class?
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OtherClass.main(args);. Main method is static, so use class name to call.
OtherClass.main(args);. Main method is static, so use class name to call.
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Identify the error: static void display() { this.show(); }
Identify the error: static void display() { this.show(); }
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Cannot use 'this' in a static method. 'this' refers to instance, not available in static context.
Cannot use 'this' in a static method. 'this' refers to instance, not available in static context.
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Identify the error: public void static print() {}
Identify the error: public void static print() {}
Tap to reveal answer
Incorrect order; should be public static void print() {}. Modifiers must follow specific order: access, static, return.
Incorrect order; should be public static void print() {}. Modifiers must follow specific order: access, static, return.
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Identify the error: static int calculate() return 0;
Identify the error: static int calculate() return 0;
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Missing curly braces. Method body requires braces around statements.
Missing curly braces. Method body requires braces around statements.
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How do you call a static method from a class?
How do you call a static method from a class?
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ClassName.methodName();. Uses dot notation with class name, no object needed.
ClassName.methodName();. Uses dot notation with class name, no object needed.
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What type of methods can be called without creating an object?
What type of methods can be called without creating an object?
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Static methods. Class methods don't require object instantiation.
Static methods. Class methods don't require object instantiation.
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Can a static method call another static method?
Can a static method call another static method?
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Yes, it can. Static methods can invoke other static methods directly.
Yes, it can. Static methods can invoke other static methods directly.
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