Can Someone help me fix this error the code is written in java... import java.util.*;class HPF { int at, bt, pri, pno; Process(int pno, int at, int bt, int pri) { this.pno = pno; this.pri = pri; this.at = at; this.bt = bt; }}class GChart { int pno, stime, ctime, wtime, ttime;}class MyComparator implements Comparator { public int compare(Object o1, Object o2) { Process p1 = (Process)o1; Process p2 = (Process)o2; if (p1.at < p2.at) return (-1); else if (p1.at == p2.at && p1.pri > p2.pri) return (-1); else return (1); }} class FindGantChart { void findGc(LinkedList queue) { int time = 0; TreeSet prique = new TreeSet(new MyComparator()); LinkedList result = new LinkedList(); while (queue.size() > 0) prique.add((Process)queue.removeFirst()); Iterator it = prique.iterator(); time = ((Process)prique.first()).at; while (it.hasNext()) { Process obj = (Process)it.next(); GChart gc1 = new GChart(); gc1.pno = obj.pno; gc1.stime = time; time += obj.bt; gc1.ctime = time; gc1.ttime = gc1.ctime - obj.at; gc1.wtime = gc1.ttime - obj.bt; result.add(gc1); } new ResultOutput(result); }} ### Java Compilation Error Explanation#### Error Message:```----jGRASP exec: javac -g HPF.javaHPF.java:6: error: invalid method declaration; return type required Process(int pno, int at, int bt, int pri) ^1 error----jGRASP wedge: exit code for process is 1.----jGRASP: operation complete.```#### Explanation:The error in the Java code compilation arises from an issue on line 6 of the `HPF.java` file. The message indicates an **invalid method declaration** because a return type for the method is missing.- **Code Line in Question:** `Process(int pno, int at, int bt, int pri)`- **Error Cause:** When declaring a method in Java, you must specify the return type of the method. This can be any valid type such as `int`, `void`, `String`, etc.#### Correction:To fix this issue, you must include a return type before the method name. For example, if the method does not return any value, use `void`:```javavoid Process(int pno, int at, int bt, int pri) { // method body}```#### Additional Notes:- The `^` symbol in the error message points to the location in the code where the error begins, which is right after the method name `Process`.- The **exit code 1** indicates that the compilation process failed due to this error. Once corrected, recompiling should proceed without this particular error.

Can Someone help me fix this error the code is written in java... import java.util.*; class HPF { int at, bt, pri, pno; Process(int pno, int at, int bt, int pri) { this.pno = pno; this.pri = pri; this.at = at; this.bt = bt; } } class GChart { int pno, stime, ctime, wtime, ttime; } class MyComparator implements Comparator { public int compare(Object o1, Object o2) { Process p1 = (Process)o1; Process p2 = (Process)o2; if (p1.at < p2.at) return (-1); else if (p1.at == p2.at && p1.pri > p2.pri) return (-1); else return (1); } } class FindGantChart { void findGc(LinkedList queue) { int time = 0; TreeSet prique = new TreeSet(new MyComparator()); LinkedList result = new LinkedList(); while (queue.size() > 0) prique.add((Process)queue.removeFirst()); Iterator it = prique.iterator(); time = ((Process)prique.first()).at; while (it.hasNext()) { Process obj = (Process)it.next(); GChart gc1 = new GChart(); gc1.pno = obj.pno; gc1.stime = time; time += obj.bt; gc1.ctime = time; gc1.ttime = gc1.ctime - obj.at; gc1.wtime = gc1.ttime - obj.bt; result.add(gc1); } new ResultOutput(result); } }

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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Question

Can Someone help me fix this error the code is written in java...

import java.util.*;

class HPF {
   int at, bt, pri, pno;
   Process(int pno, int at, int bt, int pri)
   {
       this.pno = pno;
       this.pri = pri;
       this.at = at;
       this.bt = bt;
   }
}

class GChart {
int pno, stime, ctime, wtime, ttime;
}

class MyComparator implements Comparator {

public int compare(Object o1, Object o2)
{

       Process p1 = (Process)o1;
       Process p2 = (Process)o2;
       if (p1.at < p2.at)
           return (-1);

else if (p1.at == p2.at && p1.pri > p2.pri)
return (-1);

       else
           return (1);
   }
}
class FindGantChart {
   void findGc(LinkedList queue)
   {

int time = 0;

TreeSet prique = new TreeSet(new MyComparator());

LinkedList result = new LinkedList();

       while (queue.size() > 0)
           prique.add((Process)queue.removeFirst());

       Iterator it = prique.iterator();
       time = ((Process)prique.first()).at;
       while (it.hasNext()) {
           Process obj = (Process)it.next();

           GChart gc1 = new GChart();
           gc1.pno = obj.pno;
           gc1.stime = time;
           time += obj.bt;
           gc1.ctime = time;
           gc1.ttime = gc1.ctime - obj.at;
           gc1.wtime = gc1.ttime - obj.bt;

            result.add(gc1);
       }
       new ResultOutput(result);
   }
}

### Java Compilation Error Explanation

#### Error Message:
```
----jGRASP exec: javac -g HPF.java
HPF.java:6: error: invalid method declaration; return type required
Process(int pno, int at, int bt, int pri)
^
1 error

----jGRASP wedge: exit code for process is 1.
----jGRASP: operation complete.
```

#### Explanation:
The error in the Java code compilation arises from an issue on line 6 of the `HPF.java` file. The message indicates an **invalid method declaration** because a return type for the method is missing.

- **Code Line in Question:** `Process(int pno, int at, int bt, int pri)`
- **Error Cause:** When declaring a method in Java, you must specify the return type of the method. This can be any valid type such as `int`, `void`, `String`, etc.

#### Correction:
To fix this issue, you must include a return type before the method name. For example, if the method does not return any value, use `void`:

```java
void Process(int pno, int at, int bt, int pri) {
// method body
}
```

#### Additional Notes:
- The `^` symbol in the error message points to the location in the code where the error begins, which is right after the method name `Process`.
- The **exit code 1** indicates that the compilation process failed due to this error. Once corrected, recompiling should proceed without this particular error.

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