Question

The following class contains several errors that violate the rules of Java: class Part ( private int number: private String name: private int quantity: public Part (int number, String name, int quantity) { this.number = number: this.name = name: this quantity = quantity: } public Part (int number, string name) { this (number, name, 0): } public Part () { this (0, 'No name'): } public void decreaseQuantity(int amount) { quantity = -amount: } public int getName () { return name: } public int getnumber () { return number: public int getQuantity () { return quanity: } Describe each error and specify whether it is (a) lexical, (b) syntactic, or (c) semantic. Use the numbers shown to identify the line on which each error occurs. The class may also contain programming errors that do not violate the rules of Java and will not be detected by a Java compiler. You should ignore these errors.

Answer 1

Answer: The program contains Errors at following Lines

Line 14 it is lexical error because the character literal is unclosed

Line 14 It is also Syntax Error becase it is not a statement

Line 21 we are getting incompatable type so it is Semantic Error

Program:

class Part {
private int number;
private String name;
private int quantity;
public Part(int number,String name,int quantity) {
this.number=number;
this.name=name;
this.quantity=quantity;
}
public Part(int number,String name) {
this(number,name,0);
}
public Part() {
this(0, 'No name');// lexical error because the character literal is unclosed
// It is also Syntax Error becase it is not a statement
}
public void decreaseQuantity(int amount) {
quantity=-amount;
}
public int getName() {
return name; // Here we are getting incompatable type so it is Semantic Error
}
public int getnumber() {
return number;
}
public int getQuantity() {
return quantity;
}
}

Output: