Threads
java ( 1588012 ) - com.iluwatar.pa ( 1588909 ) stack: com.iluwatar.parameter.object.App.main(App.java:55) org.codehaus.mojo.exec.ExecJavaMojo.doMain(ExecJavaMojo.java:385) org.codehaus.mojo.exec.ExecJavaMojo.doExec(ExecJavaMojo.java:374) org.codehaus.mojo.exec.ExecJavaMojo.lambda$execute$0(ExecJavaMojo.java:296) java.base/java.lang.Thread.run(Thread.java:840)
/*
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
*
* The MIT License
* Copyright © 2014-2022 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.parameter.object;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The syntax of Java language doesn’t allow you to declare a method with a predefined value
* for a parameter. Probably the best option to achieve default method parameters in Java is
* by using the method overloading. Method overloading allows you to declare several methods
* with the same name but with a different number of parameters. But the main problem with
* method overloading as a solution for default parameter values reveals itself when a method
* accepts multiple parameters. Creating an overloaded method for each possible combination of
* parameters might be cumbersome. To deal with this issue, the Parameter Object pattern is used.
* The Parameter Object is simply a wrapper object for all parameters of a method.
* It is nothing more than just a regular POJO. The advantage of the Parameter Object over a
* regular method parameter list is the fact that class fields can have default values.
* Once the wrapper class is created for the method parameter list, a corresponding builder class
* is also created. Usually it's an inner static class. The final step is to use the builder
* to construct a new parameter object. For those parameters that are skipped,
* their default values are going to be used.
*/
public class App {
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {
ParameterObject params = ParameterObject.newBuilder()
.withType("sneakers")
.sortBy("brand")
.build();
LOGGER.info(params.toString());
LOGGER.info(new SearchService().search(params));
}
}
Variables All
No. | From | Name | Value |
---|---|---|---|
1 | class@55 | LOGGER | Logger[com.iluwatar.parameter.object.App] |
2 | 55 | args | [Ljava.lang.String;@242af014 |
END | 0 | 0 | 0 |
Process Filter | Thread Filter |
---|---|
1588012 java | 1588909 com.iluwatar.pa |
No. | PN | PID | TID | TN | T | L | Message |
---|---|---|---|---|---|---|---|
1 | java | 1588012 | 1588909 | com.iluwatar.pa | com.iluwatar.parameter.object.App | I | ParameterObject[type='sneakers', sortBy='brand', sortOrder='ASC'] |
2 | java | 1588012 | 1588909 | com.iluwatar.pa | com.iluwatar.parameter.object.App | I | Requesting shoes of type "sneakers" sorted by "brand" in "ascending" order.. |
END | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
×
Functions and Shortcuts
No. | Function | Shortcuts | Description |
---|---|---|---|
1 | GB | Alt + LEFT, Alt + A | Go Backward |
2 | GF | Alt + RIGHT, Alt + D | Go Foreward |
3 | PPE | Alt + UP, Alt + W | Previous Process End |
4 | NPS | Alt + DOWN, Alt + S | Next Process Start |
5 | PB | Ctrl + LEFT, Ctrl + A | current Process Backward |
6 | PF | Ctrl + RIGHT, Ctrl + D | current Process Foreward |
7 | PPTE | Ctrl + UP, Ctrl + W | go to current Process's Previous Thread's End |
8 | PNTS | Ctrl + DOWN, Ctrl + S | go to current Process's Next Thread's Start |
9 | TB | LEFT, A | current Thread Backward |
10 | TF | RIGHT, D | current Thread Foreward |
11 | LU | UP, W | go Line Up of current code block in current thread |
12 | LD | DOWN, S | go Line Down of current code block in current thread |
13 | LP | Shift + UP, Shift + W | go to the occurrence of current line in Previous Loop |
14 | LD | Shift + DOWN, Shift + S | go to the occurrence of current line in Next Loop |
15 | BS | Home | go to code Block Start |
16 | BE | End | go to code Block End |
Project: | JavaDesignPatterns |
Update: | 20240509 |
Commit: | bf6456ba6 |
Source Code: | parameter-object |
BuildTool: | Java17 |
Compiler: | Java17 |
Runtime: | Openjdk17 |
System: | MySystemD |
Kernel: | Linux5.10.211 |
Cpu: | Intel:Corei7-7700K |
Machine: | AwesomeMachine |