Check Point Software Most Frequently Asked Latest Advanced Java Interview Questions Answers
What Is A Native Method?
A native method is a method that is implemented in a language other than Java.
Can A For Statement Loop Indefinitely?
Yes, a for statement can loop indefinitely. For example, consider the following
for(;;) ;
What Are Order Of Precedence And Associativity, And How Are They Used?
Order of precedence determines the order in which operators are evaluated in expressions.
Associatity determines whether an expression is evaluated left-to-right or right-to-left.
When A Thread Blocks On I/o, What State Does It Enter?
A thread enters the waiting state when it blocks on I/O.
To What Value Is A Variable Of The String Type Automatically Initialized?
The default value of an String type is null.
What Is The Catch Or Declare Rule For Method Declarations?
If a checked exception may be thrown within the body of a method, the method must either catch the exception or declare it in its throws clause.
What Is The Difference Between A Menuitem And A Checkboxmenuitem?
The CheckboxMenuItem class extends the MenuItem class to support a menu item that may be checked or unchecked.
What Is A Task's Priority And How Is It Used In Scheduling?
A task's priority is an integer value that identifies the relative order in which it should be executed with respect to other tasks. The scheduler attempts to schedule higher priority tasks before lower priority tasks.
What Class Is The Top Of The Awt Event Hierarchy?
The java.awt.AWTEvent class is the highest-level class in the AWT event-class hierarchy.
When A Thread Is Created And Started, What Is Its Initial State?
A thread is in the ready state after it has been created and started.
Can An Anonymous Class Be Declared As Implementing An Interface And Extending A Class?
An anonymous class may implement an interface or extend a superclass, but may not be declared to do both.
What Is The Immediate Superclass Of Menu?
MenuItem.
What Is The Purpose Of Finalization?
The purpose of finalization is to give an unreachable object the opportunity to perform any cleanup processing before the object is garbage collected.
Which Class Is The Immediate Superclass Of The Menucomponent Class?
Object.
What Invokes A Thread's Run() Method?
After a thread is started, via its start() method or that of the Thread class, the JVM invokes the thread's run() method when the thread is initially executed.
What Is The Difference Between The Boolean & Operator And The && Operator?
If an expression involving the Boolean & operator is evaluated, both operands are evaluated. Then the & operator is applied to the operand. When an expression involving the && operator is evaluated, the first operand is evaluated.
If the first operand returns a value of true then the second operand is evaluated. The && operator is then applied to the first and second operands. If the first operand evaluates to false, the evaluation of the second operand is skipped.
How Are Java Source Code Files Named?
A Java source code file takes the name of a public class or interface that is defined within the file. A source code file may contain at most one public class or interface. If a public class or interface is defined within a source code file, then the source code file must take the name of the public class or interface.
If no public class or interface is defined within a source code file, then the file must take on a name that is different than its classes and interfaces. Source code files use the .java extension.
What Is The Relationship Between The Canvas Class And The Graphics Class?
A Canvas object provides access to a Graphics object via its paint() method.
What Are The High-level Thread States?
The high-level thread states are ready, running, waiting, and dead.
What Value Does Read() Return When It Has Reached The End Of A File?
The read() method returns -1 when it has reached the end of a file.
Can A Byte Object Be Cast To A Double Value?
No. An object cannot be cast to a primitive value.
What Is The Difference Between A Static And A Non-static Inner Class?
A non-static inner class may have object instances that are associated with instances of the class's outer class.
A static inner class does not have any object instances.
What Is A Native Method?
A native method is a method that is implemented in a language other than Java.
Can A For Statement Loop Indefinitely?
Yes, a for statement can loop indefinitely. For example, consider the following
for(;;) ;
What Are Order Of Precedence And Associativity, And How Are They Used?
Order of precedence determines the order in which operators are evaluated in expressions.
Associatity determines whether an expression is evaluated left-to-right or right-to-left.
When A Thread Blocks On I/o, What State Does It Enter?
A thread enters the waiting state when it blocks on I/O.
To What Value Is A Variable Of The String Type Automatically Initialized?
The default value of an String type is null.
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| Check Point Software Most Frequently Asked Latest Advanced Java Interview Questions Answers |
What Is The Catch Or Declare Rule For Method Declarations?
If a checked exception may be thrown within the body of a method, the method must either catch the exception or declare it in its throws clause.
What Is The Difference Between A Menuitem And A Checkboxmenuitem?
The CheckboxMenuItem class extends the MenuItem class to support a menu item that may be checked or unchecked.
What Is A Task's Priority And How Is It Used In Scheduling?
A task's priority is an integer value that identifies the relative order in which it should be executed with respect to other tasks. The scheduler attempts to schedule higher priority tasks before lower priority tasks.
What Class Is The Top Of The Awt Event Hierarchy?
The java.awt.AWTEvent class is the highest-level class in the AWT event-class hierarchy.
When A Thread Is Created And Started, What Is Its Initial State?
A thread is in the ready state after it has been created and started.
Can An Anonymous Class Be Declared As Implementing An Interface And Extending A Class?
An anonymous class may implement an interface or extend a superclass, but may not be declared to do both.
What Is The Immediate Superclass Of Menu?
MenuItem.
What Is The Purpose Of Finalization?
The purpose of finalization is to give an unreachable object the opportunity to perform any cleanup processing before the object is garbage collected.
Which Class Is The Immediate Superclass Of The Menucomponent Class?
Object.
What Invokes A Thread's Run() Method?
After a thread is started, via its start() method or that of the Thread class, the JVM invokes the thread's run() method when the thread is initially executed.
What Is The Difference Between The Boolean & Operator And The && Operator?
If an expression involving the Boolean & operator is evaluated, both operands are evaluated. Then the & operator is applied to the operand. When an expression involving the && operator is evaluated, the first operand is evaluated.
If the first operand returns a value of true then the second operand is evaluated. The && operator is then applied to the first and second operands. If the first operand evaluates to false, the evaluation of the second operand is skipped.
How Are Java Source Code Files Named?
A Java source code file takes the name of a public class or interface that is defined within the file. A source code file may contain at most one public class or interface. If a public class or interface is defined within a source code file, then the source code file must take the name of the public class or interface.
If no public class or interface is defined within a source code file, then the file must take on a name that is different than its classes and interfaces. Source code files use the .java extension.
What Is The Relationship Between The Canvas Class And The Graphics Class?
A Canvas object provides access to a Graphics object via its paint() method.
What Are The High-level Thread States?
The high-level thread states are ready, running, waiting, and dead.
What Value Does Read() Return When It Has Reached The End Of A File?
The read() method returns -1 when it has reached the end of a file.
Can A Byte Object Be Cast To A Double Value?
No. An object cannot be cast to a primitive value.
What Is The Difference Between A Static And A Non-static Inner Class?
A non-static inner class may have object instances that are associated with instances of the class's outer class.
A static inner class does not have any object instances.
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