30 Java Coding Questions To Assess Programming Skills part 2 ~ foundjava

Question-16. Which Of The Following Is A Result Of The Java Code Given Below?

Java

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class TestApp {     public static void main(String args[]) {         int index = 0;         boolean flag = true;         boolean reg1 = false, reg2;         reg2 = (flag | ((index++) == 0));         reg2 = (reg1 | ((index += 2) > 0));         System.out.println(index);     } }

A. 0
B. 1
C. 2
D. 3

Check correct option.

Question-17. What Would The Following Java Coding Snippet Display On Execution?

Java

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Command-line: java TestApp 1 2 3 4 5 class TestApp {     public static void main(String[] args) {         System.out.println(args[1] + args[2] + args[3]);     } }

A. 1 2 3
B. 123
C. 234
D. Compilation Error

Check correct option.

Question-18. What Would The Below Java Coding Snippet Print If Input Given Is ?

Java

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Command-line: java TestApp abcqfghqbcd import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; class TestApp {     public static void main(String args[]) throws IOException {         char bit;         BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));         do {             bit = (char) obj.read();             System.out.print(bit);         } while (bit != 'q');     } }

A. abcqfgh
B. abc
C. abcq
D. abcqfghq

Check correct option.

Question-19. What Would The Following Java Coding Snippet Yield On Execution?

Java

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import java.io.File; class TestApp {     public static void main(String args[]) {         File sys = new File("/java/system");         System.out.print(sys.canWrite());         System.out.print(" " + sys.canRead());     } }

A. true false
B. false true
C. true true
D. false false

Check correct option.

Question-20. What Does The Following Java Coding Snippet Print As Its Output?

Java

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class Cluster { } class Node1 extends Cluster { } class Node2 extends Cluster { } public class TestApp {     public static void main(String[] args) {         Cluster tree = new Node1();         if (tree instanceof Node1)             System.out.println("Node1");         else if (tree instanceof Cluster)             System.out.println("Cluster");         else if (tree instanceof Node2)             System.out.println("Node2");         else             System.out.println("Unexpected");     } }

A. Cluster
B. Node1
C. Node2
D. Unexpected

Check correct option.

Question-21. Which Of The Following Is The Result Of The Below Program?

Java

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public class SimpleTest {     public static void stringReplace(String str) {         str = str.replace('c', 'c');     }     public static void bufferReplace(StringBuffer str) {         str.trimToSize();     }     public static void main(String args[]) {         String myString = new String("cplus");         StringBuffer myBuffer = new StringBuffer(" plus");         stringReplace(myString);         bufferReplace(myBuffer);         System.out.println(myString + myBuffer);     } }

A. cplusplus
B. plus plus
C. cplus plus
D. c plus plus

Check correct option.

Question-22. Which Of The Following Is The Outcome Of The Below Program? Assume The Given Input Is <Abc’def/’Egh>.

Java

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import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class SimpleTest {     public static void main(String args[]) throws IOException {         char bit;         BufferedReader console = new BufferedReader(new InputStreamReader(System.in));         do {             bit = (char) console.read();             System.out.print(bit);         } while (bit != '\'');     } }

A. abc’
B. abcdef/’
C. abc’def/’egh
D. abcqfghq

Check correct option.

Question-23. Which Of The Following Is The Result Of The Below Java Coding Snippet?

Java

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import java.io.File; public class SimpleTest {     public static void main(String args[]) {         File sys = new File("/MVC/system");         System.out.print(sys.getParent());         System.out.print(" " + sys.isFile());     } }

A. MVC true
B. MVC false
C. \MVC false
D. \MVC true

Check correct option.