Task.java

public class Task {
    private int id;
    private String title;
    private String description;
    private String priority; //  to set LOW , Medium , High
    private boolean isCompleted;

// Now the best part of Constructor 
public Task(int id, String title, String description, String priority) {
    this.id = id;
    this.title =  title;
    this.description = description;
    this.priority = priority.toUpperCase();
    this.isCompleted = false;
}

// Now we use here Getters & Setters for accessing private fields:
public int getID() { return id;}
public String getTitle() { return title;}
public String getDescription() { return description;}
public String getPriority() { return priority;}
public boolean isCompleted() { return isCompleted;}

// now the turn for Setters:
public void setTitle(String title) {
    this.title = title;
}
public void setDescription(String description) {
    this.description = description;
}
public void setPriority(String priority) {
    this.priority = priority.toUpperCase();
}
public void setCompleted(boolean completed) {
    isCompleted = completed;
}

// Now for Display Task info ( here we can't use .get**** to access the fields coz it will be more messy & long code ) || so here we use tostring() option which is pre-generated by the java whom we can't see but they exist , so here we have to override it :)

@Override
public String toString() {
    String status = isCompleted ? " DONE " : " PENDING -_- ";
    return String.format("[ID: %d] %s | Priority: %s | Status: %s\n  Description: %s", id, title, priority, status, description);
    }
}