Java Programming Test 4

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What is the length of the application box made by this program?

import java.awt.*;

import java.applet.*;

public class myapplet extends Applet {

public void paint(Graphics g) {

g.drawString(“A Simple Applet”, 20, 20);

}

}

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Which of these keyword must be used to inherit a class?

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Which of these keywords is used to refer to member of base class from a sub class?

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A class member declared protected becomes member of subclass of which type?

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Which of these is correct way of inheriting class A by class B?

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Which of the following statements are incorrect?

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Which of these keywords is used to define packages in Java?

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Which of these is a mechanism for naming and visibility control of a class and its content?

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Which of this access specifies can be used for a class so that its members can be accessed by a different class in the same package?

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Which of these access specifiers can be used for a class so that it’s members can be accessed by a different class in the different package?

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Which of the following is correct way of importing an entire package ‘pkg’ ?

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Which of the following is incorrect statement about packages?

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Which of the following package stores all the standard java classes?

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What is the output of this program?

package pkg;

class output {

public static void main(String args[])

{

StringBuffer s1 = new StringBuffer(“Hello”);

s1.setCharAt(1, x);

System.out.println(s1);

}

}

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What is the output of this program?

package pkg;

class output {

public static void main(String args[])

{

StringBuffer s1 = new StringBuffer(“Hello World”);

s1.insert(6 , “Good “);

System.out.println(s1);

}

}

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String in Java is a?

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Which of these method of String class is used to obtain character at specified index?

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Which of these keywords is used to refer to member of base class from a sub class?

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Which of this method of String class can be used to test to strings for equality?

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Which of the following statements are incorrect?