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I am trying to make a java program vending machine, in the class VendingMachineImpl.java I keep getting an error "Incompatible types. Found: 'Coin', required: 'java.lang.Object'" on line 167. How do I fix this?

I am trying to make a java program vending machine, in the class VendingMachineImpl.java I keep getting an error "Incompatible types. Found: 'Coin', required: 'java.lang.Object'" on line 167. How do I fix this?

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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I am trying to make a java program vending machine, in the class VendingMachineImpl.java I keep getting an error "Incompatible types. Found: 'Coin', required: 'java.lang.Object'" on line 167. How do I fix this?

Vending – VendingMachinelmpl.java Vending src © VendingMachinelmpl Add Configuration. O VendingMachine.java © VendingMachinelmpl.java VendingMachineFactory.java e Item.java e Coin.java © Bucket.java O NotFullPaidException.java O NotSufficientChangeException,.java 4 SoldOutExceptio v 01 A 16 A 1 1 A v return hasSufficientChangeForAmount (currentBalance - currentItem.getPrice()); 152 153 154 155 private boolean hasSufficientChangeForAmount(Long amount){ 156 boolean hasChange = true; 157 try{ getChange (amount); 158 159 }catch(NotSufficientChangeException nsce){ 160 return hasChange = false; 161 } 162 163 return hasChange; 164 165 166 @ private void updateCashInventory(List change) { 167 for (Coin c : change){ 168 cashInventory.deduct(c); 169 170 Problems: Current File 19 Project Errors 1 © VendingMachinelmpl.java ~/ldeaProjects/Vending/src 19 problems Incompatible types. Found: 'Coin', required: 'java.lang.Object' :167 A Field 'cashlnventory' may be 'final" :5 A Explicit type argument Coin can be replaced with <> :5 A Field 'itemlnventory' may be 'final' :6 A Explicit type argument Item can be replaced with <> :6 A Explicit type argument Item, List<Coin> can be replaced with <> :50 A 'if statement can be simplified :88 A Unchecked assignment: 'java.util.List' to 'java.util.List<Coin>' :96 E TODO O Problems 2 Terminal a Event Log O IntelliJ IDEA 2020.3.4 available // Updat.. (33 minutes ago) 167:9 (21 chars) LF UTF-8 4 spac. L|| | ||| || |
Transcribed Image Text:Vending – VendingMachinelmpl.java Vending src © VendingMachinelmpl Add Configuration. O VendingMachine.java © VendingMachinelmpl.java VendingMachineFactory.java e Item.java e Coin.java © Bucket.java O NotFullPaidException.java O NotSufficientChangeException,.java 4 SoldOutExceptio v 01 A 16 A 1 1 A v return hasSufficientChangeForAmount (currentBalance - currentItem.getPrice()); 152 153 154 155 private boolean hasSufficientChangeForAmount(Long amount){ 156 boolean hasChange = true; 157 try{ getChange (amount); 158 159 }catch(NotSufficientChangeException nsce){ 160 return hasChange = false; 161 } 162 163 return hasChange; 164 165 166 @ private void updateCashInventory(List change) { 167 for (Coin c : change){ 168 cashInventory.deduct(c); 169 170 Problems: Current File 19 Project Errors 1 © VendingMachinelmpl.java ~/ldeaProjects/Vending/src 19 problems Incompatible types. Found: 'Coin', required: 'java.lang.Object' :167 A Field 'cashlnventory' may be 'final" :5 A Explicit type argument Coin can be replaced with <> :5 A Field 'itemlnventory' may be 'final' :6 A Explicit type argument Item can be replaced with <> :6 A Explicit type argument Item, List<Coin> can be replaced with <> :50 A 'if statement can be simplified :88 A Unchecked assignment: 'java.util.List' to 'java.util.List<Coin>' :96 E TODO O Problems 2 Terminal a Event Log O IntelliJ IDEA 2020.3.4 available // Updat.. (33 minutes ago) 167:9 (21 chars) LF UTF-8 4 spac. L|| | ||| || |
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