Chapter 1, Problem 1DE

a. DebugOne1.java

Explanation of Solution

Errors in the given program:

In the given program “DebugOne1.java”, there are two errors, they are,

• The block comment section is not closed in Line 3.
• The keyword “static” is missing in Line 4.
• The highlighted lines are the corrected statements in the given program.

Corrected Program:

// Class definition

public class FixDebugOne1                 // Line 1

{                                    // Line 2

    /* This program displays a greeting */    // Line 3

    public static void main(String[] args)    // Line 4

&...

b. DebugOne2.java

Explanation of Solution

Errors in the given program:

In the given program “DebugOne2.java”, there are two errors, they are,

• The print statements are given wrongly; the correct statement to print is “System.out.println”.
• The double quotes in print statement are missing in Line 8 and Line 10.

Corrected Program:

// Class definition

public class FixDebugOne2                 // Line 1

{                                    // Line 2

    /* This program displays some output*/    // Line 3

    public static void main(String[] args)    // Line 4

    {                                // Line 5

        // Display the statement

        System.out...

c. DebugOne3.java

Explanation of Solution

Errors in the given program:

In the given program “DebugOne3.java”, there are two errors, they are,

• The main method is not defined properly, the square brackets “[]” is missing in String function.
• The print statements are given wrongly;
  • In Line 6, the letter “l” should be typed instead of “1”.
  • In Line 7, the letter “i” should be typed instead of “1”.
  • In Line 8, the letter “S” should be in uppercase instead of lowercase “s”.

Corrected Program:

// Class definition

public class FixDebugOne3                 // Line 1

{                                    // Line 2

    /* This program displays some output*/    // Line 3

    public static void main(String[] args)    // Line 4

    {       ...

d. DebugOne4.java

Explanation of Solution

Errors in the given program:

In the given program “DebugOne4.java”, there are few errors, they are,

• In the main method in Line 3, the “static” keyword is misspelled.
• In Line 4, the “JOptionpane” class is misspelled, it should be “JOptionPane”.
• In Line 4, the parameter “nul” in “JOptionPane” class is misspelled, it should be “null”.

Corrected Program:

// Import the package

import javax.swing...