Utils in Java 

1.java.lang.System 
https://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html
2.org.apache.commons.lang.SystemUtils uses it. 
.getJavaHome().getJavaIoTmpDir().getUserDir().getUserHome()
.JAVA_VERSION.OS_NAME.USER_TIMEZONE
3.org.apache.commons.lang.math.NumberUtils 
http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/math/NumberUtils.html 
4.org.apache.commons.lang.StringUtils
https://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/StringUtils.html
5.org.springframework.beans.BeanUtils
https://docs.spring.io/spring-framework/docs/5.1.3.RELEASE/javadoc-api/org/springframework/beans/BeanUtils.html
6.org.apache.commons.beanutils
http://commons.apache.org/proper/commons-beanutils/javadocs/v1.9.3/apidocs/index.html
http://commons.apache.org/proper/commons-beanutils/

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