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BAEL-5791: Convert String to Instant (creating new module)

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achraftt 2022-10-27 00:12:35 +02:00
parent 24389cbb20
commit 03a4639341
3 changed files with 96 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:

58
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>${project.parent.version}</version>
<name>core-java-datetime-string-2</name>
<packaging>jar</packaging>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>${commons-lang3.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-validator/commons-validator -->
<dependency>
<groupId>commons-validator</groupId>
<artifactId>commons-validator</artifactId>
<version>${commons-validator.version}</version>
</dependency>
</dependencies>
<build>
<finalName>core-java-datetime-string-2</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<commons-validator.version>1.6</commons-validator.version>
<maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</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");
}
}