实现作业状态原因应用编程接口的 Java 程序
原文:https://www . geesforgeks . org/Java-程序到实现-jobstatesreasons-API/
一个 API 代表应用编程接口，它只是一组定义和协议，用于构建和集成应用软件，以简化应用开发，从而节省时间和金钱。例如，如果我们想使用过去的数据来预测不同城市的天气，而不是手动查找和输入所有过去的数据，我们可以使用天气 API 来加快和临时准备这个过程。
JobState 是一个打印属性类，而不是一个标识打印作业当前状态的枚举。作业状态类定义了标准的作业状态值。打印服务实现只需要报告那些适合特定实现的作业状态。它不必报告每个定义的作业状态。“作业状态原因”属性倾向于增加“作业状态”属性，以确保在给定作业状态下获得有关作业的更详细信息。
实现:通过 java 程序实现 JobStateReasons API
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to Implementing JobStateReasons API
// Importing java libraries
import java.util.Collection;
import javax.print.attribute.Attribute;
import javax.print.attribute.standard.JobStateReason;
import javax.print.attribute.standard.JobStateReasons;
public class GFG {
private JobStateReasons jobStateReasons;
// Construct a new, empty job state reasons attribute;
// the underlying hash set has the default initial
// capacity and load factor
public GFG()
{
jobStateReasons = new JobStateReasons();
}
// Construct a new job state reasons
// attribute that contains the same
// JobStateReason objects as the given collection
public GFG(Collection<JobStateReason> collection)
{
jobStateReasons = new JobStateReasons(collection);
}
// Construct a new, empty job state reasons attribute;
// the underlying hash set has the given
// initial capacity and the default load
// factor.
public GFG(int initialCapacity)
{
jobStateReasons
= new JobStateReasons(initialCapacity);
}
// Construct a new, empty job state reasons attribute;
// the underlying hash
// set has the given initial capacity and load factor
public GFG(int initialCapacity, float loadFactor)
{
jobStateReasons = new JobStateReasons(
initialCapacity, loadFactor);
}
// Adds the specified element to this job state reasons
// attribute if it is not already present.
public boolean add(JobStateReason o)
{
return jobStateReasons.add(o);
}
// Get the printing attribute class which is to be used
// as the "category" for this printing attribute value.
public Class<? extends Attribute> getCategory()
{
return jobStateReasons.getCategory();
}
// Get the name of the category of which this attribute
// value is an instance
public String getName()
{
return jobStateReasons.getName();
}
// Return true if this set contains the specified
// element
public boolean contains(Object obj)
{
return jobStateReasons.contains(obj);
}
// Returns true if the set is empty
public boolean isEmpty()
{
return jobStateReasons.isEmpty();
}
// Removes the specified element from
// this set if present
public boolean remove(Object obj)
{
return jobStateReasons.remove(obj);
}
// Returns the number of elements in set
public int size() { return jobStateReasons.size(); }
// Removes all elements from this set
public void clear() { jobStateReasons.clear(); }
// Returns an array containing all of the elements in
// this set
public Object[] toArray()
{
return jobStateReasons.toArray();
}
// Main driver function
public static void main(String args[])
{
// Creating object of class
GFG jobStateReasons = new GFG();
jobStateReasons.add(
JobStateReason.COMPRESSION_ERROR);
jobStateReasons.add(
JobStateReason.JOB_CANCELED_BY_USER);
jobStateReasons.add(
JobStateReason.JOB_COMPLETED_WITH_WARNINGS);
jobStateReasons.add(
JobStateReason.DOCUMENT_FORMAT_ERROR);
// Display messages
System.out.println("Category Name: "
+ jobStateReasons.getName());
System.out.println();
System.out.println("The JobStateReasons are: ");
Object[] jobs = (Object[])jobStateReasons.toArray();
for (int i = 0; i < jobs.length; i++) {
System.out.println((i + 1) + ") " + jobs[i]);
}
System.out.println();
jobStateReasons.clear();
System.out.println(
"all JobStateReasons are cleared");
if (jobStateReasons.isEmpty())
System.out.println(
"jobStateReasons is now empty");
else
System.out.println(
"jobStateReasons is not empty yet");
}
}
输出:
Category Name: job-state-reasons
The JobStateReasons are:
1) compression-error
2) document-format-error
3) job-completed-with-warnings
4) job-canceled-by-user
all JobStateReasons are cleared
jobStateReasons is now empty
版权属于：月萌API www.moonapi.com，转载请注明出处
