What is Java generics? It is the ability\u00a0 defining a scope without really knowing the scope, but knowing limitations to the scope. Generics was the obvious follow up tot the concept of interfaces. Taking abstract to a whole new level of awesomeness!!!<\/p>\n
Let me explain in the most simplest ways I can think off:<\/p>\n
1. You have a hosepipe<\/p>\n
2. You want to fit odds and ends to the hosepipe (sprayGun)<\/p>\n
3. you need to develop a middle object connector, interface for these objects to fit onto the hosepipe<\/p>\n
4. you want the connector to be able to do a specific set of access ways (connectToPipe, connectToConnector, sendWater, recieveWater)<\/p>\n
5. you want the connector to have a set expected input, and expected outputs (waterFlow,5mmWaterFlow,3mmWaterFlow)<\/p>\n
So we begin:<\/p>\n
HosePipe.java<\/p>\n
public class HosePipe extends Connector<WaterFlow5mm>{\r\n public void sendWaterflow(WaterFlow5mm waterflow){\r\n \u00a0\/\/ Do whatever to the water that was sent to me\r\n System.out.println(waterflow.getWater().toString(););\r\n \u00a0}\r\n public WaterFlow5mm recieveWaterflow(){\r\n return new WaterFlow5mm();\r\n \u00a0}\r\n}<\/pre>\nSprayGun.java<\/p>\n
public class SprayGun extends Connector<WaterFlow5mm>{\r\n public void sendWaterflow(WaterFlow5mm waterflow){\r\n \u00a0 \/\/ Do whatever to the water that was sent to me\r\n System.out.println(waterflow.getWater().toString(););\r\n \u00a0} \r\n\r\n public WaterFlow5mm recieveWaterflow(){\r\n return return new WaterFlow5mm();\r\n \u00a0 }\r\n\r\n\u00a0}<\/pre>\nWater.java<\/p>\n
public class Water(){\r\n\r\nprivate int oxygen = 1;\r\nprivate int hydrogen = 2\r\npublic int getOxygen(){\r\n return oxygen;\r\n}\r\n\r\npublic int getHydrogen (){\r\n return hydrogen ;\r\n}\r\n\r\n}<\/pre>\nWaterFlow.java<\/p>\n
public abstract class WaterFlow(){\r\npublic Water[] getWater();\r\n\r\n}<\/pre>\nWaterFlow5mm.java<\/p>\n
public class WaterFlow5mm(){\r\npublic Water[] getWater(){\r\n\r\nreturn new Water[5];\r\n\r\n}\r\n\r\n}<\/pre>\nConnector.java<\/p>\n
public abstract class Connector<A extends WaterFlow> implements Connectable<A>{\r\n\r\nboolean connectToPipe(){\r\n\r\n\/\/click\r\n\r\n};\r\n\r\nboolean connectToOdds(){\r\n\r\n\/\/click\r\n\r\n};\r\n\r\npublic abstract void sendWater(A waterflow);\r\n\r\npublic abstract A recieveWaterflow();\r\n\r\n}<\/pre>\nConnectable.java<\/p>\n
public interface Connectable<A extends WaterFlow>{\r\n\r\nboolean connectToPipe();\r\n\r\nboolean connectToOdds();\r\n\r\nvoid sendWaterflow(A waterflow);\r\n\r\nA recieveWaterflow();\r\n\r\n}\r\n\r\nNow there are many more examples how generics can be used to simplify 'n project, but also be careful NOT to over complicate your project with generics.<\/pre>\n","protected":false},"excerpt":{"rendered":"What is Java generics? It is the ability\u00a0 defining a scope without really knowing the scope, but knowing limitations to the scope. Generics was the obvious follow up tot the concept of interfaces. Taking abstract to a whole new level of awesomeness!!! Let me explain in the most simplest ways I can think off: 1. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1,10],"tags":[],"_links":{"self":[{"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/posts\/88"}],"collection":[{"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/comments?post=88"}],"version-history":[{"count":11,"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/posts\/88\/revisions"}],"predecessor-version":[{"id":162,"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/posts\/88\/revisions\/162"}],"wp:attachment":[{"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/media?parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/categories?post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c0nan.net\/blog\/wp-json\/wp\/v2\/tags?post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}