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Merge pull request #12935 from achraftt/BAEL-5791-adaptation 

BAEL-5791: Convert String to Instant (creating new module)
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Loredana Crusoveanu 2022-11-11 10:00:03 +02:00 committed by GitHub
parent 525bf00fe2 117469a04b
commit 1b48232d56
3 changed files with 74 additions and 0 deletions
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6
core-java-modules/core-java-datetime-string-2/README.md Normal file
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## Java Dates Parsing and Formatting Cookbooks and Examples
This module contains articles about parsing and formatting Java date and time objects.
### Relevant Articles:

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core-java-modules/core-java-datetime-string-2/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-datetime-string-2</artifactId>
<version>${project.parent.version}</version>
<name>core-java-datetime-string-2</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>

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core-java-modules/core-java-datetime-string-2/src/test/java/com/baeldung/instant/StringToInstantConverterUnitTest.java Normal file
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package com.baeldung.instant;
import org.junit.Test;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;
import static org.assertj.core.api.Assertions.assertThat;
public class StringToInstantConverterUnitTest {
String stringDate = "09:15:30 PM, Sun 10/09/2022";
String pattern = "hh:mm:ss a, EEE M/d/uuuu";
@Test public void givenStringTimeStamp_whenConvertingWithInstantUsingTimeZone_thenConvertToInstant() {
DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern(pattern, Locale.US);
LocalDateTime localDateTime = LocalDateTime.parse(stringDate, dateTimeFormatter);
ZoneId zoneId = ZoneId.of("America/Chicago");
ZonedDateTime zonedDateTime = localDateTime.atZone(zoneId);
Instant instant = zonedDateTime.toInstant();
assertThat(instant.toString()).isEqualTo("2022-10-10T02:15:30Z");
}
@Test public void givenStringTimeStamp_whenConvertingWithLocalDateTime_thenConvertToInstant() {
DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern(pattern, Locale.US);
LocalDateTime localDateTime = LocalDateTime.parse(stringDate, dateTimeFormatter);
assertThat(localDateTime.toString()).isEqualTo("2022-10-09T21:15:30");
}
}