Appearance
question:I'm asking in the past why you use use but used?
answer:In English, when we form questions in the past tense using "did," the verb that follows "did" always returns to its base form. This is because "did" itself already indicates the past tense, so there's no need to put the following verb into its past form as well. That's why "use" is correct instead of "used" after "did."
question:// // Source code recreated from a .class file by IntelliJ IDEA // (powered by FernFlower decompiler) // package org.springframework.batch.core; import java.io.IOException; import java.io.ObjectInputStream; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.Date; import java.util.HashSet; import java.util.Iterator; import java.util.LinkedHashSet; import java.util.List; import java.util.Set; import java.util.concurrent.CopyOnWriteArrayList; import org.springframework.batch.item.ExecutionContext; import org.springframework.lang.Nullable; public class JobExecution extends Entity { private final JobParameters jobParameters; private JobInstance jobInstance; private volatile Collection<StepExecution> stepExecutions; private volatile BatchStatus status; private volatile Date startTime; private volatile Date createTime; private volatile Date endTime; private volatile Date lastUpdated; private volatile ExitStatus exitStatus; private volatile ExecutionContext executionContext; private transient volatile List<Throwable> failureExceptions; private final String jobConfigurationName; public JobExecution(JobExecution original) { this.stepExecutions = Collections.synchronizedSet(new LinkedHashSet()); this.status = BatchStatus.STARTING; this.startTime = null; this.createTime = new Date(System.currentTimeMillis()); this.endTime = null; this.lastUpdated = null; this.exitStatus = ExitStatus.UNKNOWN; this.executionContext = new ExecutionContext(); this.failureExceptions = new CopyOnWriteArrayList(); this.jobParameters = original.getJobParameters(); this.jobInstance = original.getJobInstance(); this.stepExecutions = original.getStepExecutions(); this.status = original.getStatus(); this.startTime = original.getStartTime(); this.createTime = original.getCreateTime(); this.endTime = original.getEndTime(); this.lastUpdated = original.getLastUpdated(); this.exitStatus = original.getExitStatus(); this.executionContext = original.getExecutionContext(); this.failureExceptions = original.getFailureExceptions(); this.jobConfigurationName = original.getJobConfigurationName(); this.setId(original.getId()); this.setVersion(original.getVersion()); } public JobExecution(JobInstance job, Long id, @Nullable JobParameters jobParameters, String jobConfigurationName) { super(id); this.stepExecutions = Collections.synchronizedSet(new LinkedHashSet()); this.status = BatchStatus.STARTING; this.startTime = null; this.createTime = new Date(System.currentTimeMillis()); this.endTime = null; this.lastUpdated = null; this.exitStatus = ExitStatus.UNKNOWN; this.executionContext = new ExecutionContext(); this.failureExceptions = new CopyOnWriteArrayList(); this.jobInstance = job; this.jobParameters = jobParameters == null ? new JobParameters() : jobParameters; this.jobConfigurationName = jobConfigurationName; } public JobExecution(JobInstance job, JobParameters jobParameters, String jobConfigurationName) { this(job, (Long)null, jobParameters, jobConfigurationName); } public JobExecution(Long id, JobParameters jobParameters, String jobConfigurationName) { this((JobInstance)null, id, jobParameters, jobConfigurationName); } public JobExecution(JobInstance job, JobParameters jobParameters) { this(job, (Long)null, jobParameters, (String)null); } public JobExecution(Long id, JobParameters jobParameters) { this((JobInstance)null, id, jobParameters, (String)null); } public JobExecution(Long id) { this((JobInstance)null, id, (JobParameters)null, (String)null); } public JobParameters getJobParameters() { return this.jobParameters; } public Date getEndTime() { return this.endTime; } public void setJobInstance(JobInstance jobInstance) { this.jobInstance = jobInstance; } public void setEndTime(Date endTime) { this.endTime = endTime; } public Date getStartTime() { return this.startTime; } public void setStartTime(Date startTime) { this.startTime = startTime; } public BatchStatus getStatus() { return this.status; } public void setStatus(BatchStatus status) { this.status = status; } public void upgradeStatus(BatchStatus status) { this.status = this.status.upgradeTo(status); } public Long getJobId() { return this.jobInstance != null ? this.jobInstance.getId() : null; } public void setExitStatus(ExitStatus exitStatus) { this.exitStatus = exitStatus; } public ExitStatus getExitStatus() { return this.exitStatus; } public JobInstance getJobInstance() { return this.jobInstance; } public Collection<StepExecution> getStepExecutions() { return Collections.unmodifiableList(new ArrayList(this.stepExecutions)); } public StepExecution createStepExecution(String stepName) { StepExecution stepExecution = new StepExecution(stepName, this); this.stepExecutions.add(stepExecution); return stepExecution; } public boolean isRunning() { return this.startTime != null && this.endTime == null; } public boolean isStopping() { return this.status == BatchStatus.STOPPING; } /** @deprecated */ @Deprecated public void stop() { Iterator var1 = this.stepExecutions.iterator(); while(var1.hasNext()) { StepExecution stepExecution = (StepExecution)var1.next(); stepExecution.setTerminateOnly(); } this.status = BatchStatus.STOPPING; } public void setExecutionContext(ExecutionContext executionContext) { this.executionContext = executionContext; } public ExecutionContext getExecutionContext() { return this.executionContext; } public Date getCreateTime() { return this.createTime; } public void setCreateTime(Date createTime) { this.createTime = createTime; } public String getJobConfigurationName() { return this.jobConfigurationName; } void addStepExecution(StepExecution stepExecution) { this.stepExecutions.add(stepExecution); } public Date getLastUpdated() { return this.lastUpdated; } public void setLastUpdated(Date lastUpdated) { this.lastUpdated = lastUpdated; } public List<Throwable> getFailureExceptions() { return this.failureExceptions; } public synchronized void addFailureException(Throwable t) { this.failureExceptions.add(t); } public synchronized List<Throwable> getAllFailureExceptions() { Set<Throwable> allExceptions = new HashSet(this.failureExceptions); Iterator var2 = this.stepExecutions.iterator(); while(var2.hasNext()) { StepExecution stepExecution = (StepExecution)var2.next(); allExceptions.addAll(stepExecution.getFailureExceptions()); } return new ArrayList(allExceptions); } private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException { stream.defaultReadObject(); this.failureExceptions = new ArrayList(); } public String toString() { return super.toString() + String.format(", startTime=%s, endTime=%s, lastUpdated=%s, status=%s, exitStatus=%s, job=[%s], jobParameters=[%s]", this.startTime, this.endTime, this.lastUpdated, this.status, this.exitStatus, this.jobInstance, this.jobParameters); } public void addStepExecutions(List<StepExecution> stepExecutions) { if (stepExecutions != null) { this.stepExecutions.removeAll(stepExecutions); this.stepExecutions.addAll(stepExecutions); } } } package com.mns.oms.batch.domain; import java.time.LocalDateTime; import java.util.Date; import java.util.List; import org.springframework.data.annotation.CreatedDate; import org.springframework.data.annotation.Id; import org.springframework.data.annotation.LastModifiedDate; import org.springframework.data.mongodb.core.mapping.Document; import com.mns.oms.batch.model.JobStepDetails; import lombok.Data; /** * @author Mrinmoy Mandal * * Module: WISMR * */ @Data @Document(collection = "job-statistics") public class JobStatistics { @Id private String id; private Long jobId; private String jobName; private String jobStatus; private String jobExitStatus; private String jobExitDescription; private List<JobStepDetails> stepDetails; private List<String> fileList; private LocalDateTime startTime; private Date testStartTime; private LocalDateTime endTime; @CreatedDate private LocalDateTime createdDate; @LastModifiedDate private LocalDateTime lastModifieDate; } below here ......jobStats.setTestStartTime(inn);.....is working but this code is giving jobStats.setTestStartTime(jobExecution.getStartTime());....incompatible types: java.time.LocalDateTime cannot be converted to java.util.Date Date inn = new Date(); jobStats.setTestStartTime(inn); jobStats.setTestStartTime(jobExecution.getStartTime()); how to fix this issue in jobStats.setTestStartTime(jobExecution.getStartTime());
answer:To fix the issue with `jobStats.setTestStartTime(jobExecution.getStartTime());`, you can convert the `Date` to `LocalDateTime` using the `Instant` class in Java. Here's how you can do it: ```java Date startDate = jobExecution.getStartTime(); LocalDateTime localDateTime = LocalDateTime.ofInstant(startDate.toInstant(), ZoneId.systemDefault()); jobStats.setTestStartTime(localDateTime); ``` This code snippet retrieves the `startTime` from the `JobExecution`, converts it to an `Instant`, and then converts it to a `LocalDateTime` which can be set in the `jobStats` object.
question:but why ti change to LocalDateTime
answer:If you want to set the `startTime` from the `JobExecution` to the `testStartTime` field in `JobStatistics`, you should keep the type consistent. The `testStartTime` field in `JobStatistics` is of type `Date`, so you need to ensure that you are setting a `Date` object to it. In the original code snippet, `jobStats.setTestStartTime(jobExecution.getStartTime());`, the `getStartTime()` method returns a `Date` object, but the `setTestStartTime()` method expects a `Date` object as well. So, you can directly set the `Date` object obtained from `getStartTime()` to `testStartTime` without any conversion. Thus, you can simply use: ```java jobStats.setTestStartTime(jobExecution.getStartTime()); ``` This will set the `startTime` from `JobExecution` directly to the `testStartTime` field in `JobStatistics` without any unnecessary conversions.
question:during maven build....its gving issue like....incompatible types: java.time.LocalDateTime cannot be converted to java.util.Date
answer:If you are encountering an issue during Maven build where `java.time.LocalDateTime` cannot be converted to `java.util.Date`, it means that the types are not compatible as `LocalDateTime` is from Java 8's Date-Time API and `Date` is a legacy class from the previous versions of Java. To resolve this issue, you can convert `LocalDateTime` to `Date` using `java.sql.Timestamp` as an intermediary step. Here's how you can modify the code: ```java // Convert LocalDateTime to Timestamp LocalDateTime localDateTime = jobExecution.getStartTime(); Timestamp timestamp = Timestamp.valueOf(localDateTime); // Convert Timestamp to Date Date date = new Date(timestamp.getTime()); // Set the Date to the testStartTime field in JobStatistics jobStats.setTestStartTime(date); ``` By converting `LocalDateTime` to `Timestamp` and then to `Date`, you ensure compatibility with the `testStartTime` field of type `Date` in `JobStatistics` and resolve the incompatible types issue during the Maven build.