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How should the code be fixed? public class MidtermProblems {       // Main driver method     public static void main(String args[])        System.out.println( "JOHN".isBlank() ); //it returns false         System.out.println( "ROBERT".isBlank() ); //it returs false         System.out.println( " ".isBlank() ); //it returns false                  System.out.println( "".isBlank() ); //it returns true          int a;     int b;     if(s = null){     Double a = scan.nextDouble();     }     else{     Double a = scan.nextDouble();     }     Double b = scan.nextDouble(); s = MidtermProblems.replaceFirst(null, 't');

How should the code be fixed? public class MidtermProblems {       // Main driver method     public static void main(String args[])        System.out.println( "JOHN".isBlank() ); //it returns false         System.out.println( "ROBERT".isBlank() ); //it returs false         System.out.println( " ".isBlank() ); //it returns false                  System.out.println( "".isBlank() ); //it returns true          int a;     int b;     if(s = null){     Double a = scan.nextDouble();     }     else{     Double a = scan.nextDouble();     }     Double b = scan.nextDouble(); s = MidtermProblems.replaceFirst(null, 't');

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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How should the code be fixed?

public class MidtermProblems {
 
    // Main driver method
    public static void main(String args[])
       System.out.println( "JOHN".isBlank() ); //it returns false

        System.out.println( "ROBERT".isBlank() ); //it returs false

        System.out.println( " ".isBlank() ); //it returns false
        
        System.out.println( "".isBlank() ); //it returns true
    
    int a;
    int b;
    if(s = null){
    Double a = scan.nextDouble();
    }
    else{
    Double a = scan.nextDouble();
    }
    Double b = scan.nextDouble();
s = MidtermProblems.replaceFirst(null, 't');
}

**Java Compilation Error Messages:** The image displays a series of compilation errors in the Java file `MidtermProblems.java`. These errors are commonly encountered when compiling Java programs. Let's go through them: 1. **Error Message:** - `MidtermProblems.java:14: error: unclosed character literal` - **Explanation:** This error occurs at line 14 and indicates that there is an issue with the character literal syntax. In Java, character literals must be enclosed in single quotes (' '). The line in question is: ```java System.out.println(Str.replace('line', 'usrInput')); ``` - In this line, the character literals seem to be incorrectly used; `Str.replace()` requires strings, which are enclosed in double quotes (" "), not single quotes. 2. **Error Message:** - `MidtermProblems.java:14: error: not a statement` - **Explanation:** This error suggests that the line of code is not recognized as a valid statement. This could stem from the same issue with character literals, causing the compiler to misinterpret the expression. 3. **Error Message:** - `MidtermProblems.java:17: error: reached end of file while parsing` - **Explanation:** This indicates that the file ended unexpectedly or that there might be a missing closing brace `}` or a semicolon. The parser is expecting more code to complete the structure. **Suggested Fixes:** - Ensure that character strings are enclosed in double quotes: ```java System.out.println(Str.replace("line", "usrInput")); ``` - Check for any missing brackets or syntax issues elsewhere in the code.
Transcribed Image Text:**Java Compilation Error Messages:** The image displays a series of compilation errors in the Java file `MidtermProblems.java`. These errors are commonly encountered when compiling Java programs. Let's go through them: 1. **Error Message:** - `MidtermProblems.java:14: error: unclosed character literal` - **Explanation:** This error occurs at line 14 and indicates that there is an issue with the character literal syntax. In Java, character literals must be enclosed in single quotes (' '). The line in question is: ```java System.out.println(Str.replace('line', 'usrInput')); ``` - In this line, the character literals seem to be incorrectly used; `Str.replace()` requires strings, which are enclosed in double quotes (" "), not single quotes. 2. **Error Message:** - `MidtermProblems.java:14: error: not a statement` - **Explanation:** This error suggests that the line of code is not recognized as a valid statement. This could stem from the same issue with character literals, causing the compiler to misinterpret the expression. 3. **Error Message:** - `MidtermProblems.java:17: error: reached end of file while parsing` - **Explanation:** This indicates that the file ended unexpectedly or that there might be a missing closing brace `}` or a semicolon. The parser is expecting more code to complete the structure. **Suggested Fixes:** - Ensure that character strings are enclosed in double quotes: ```java System.out.println(Str.replace("line", "usrInput")); ``` - Check for any missing brackets or syntax issues elsewhere in the code.
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