Best way to convert float to int in Java 8?

Most of the time, Java developers have to do type conversion. In this example, I will cover the conversion of float datatype to int. There are several ways to achieve this.

Solution 1

``` public class FloatToIntCasting {```

public static void main( String[] args ) {

float value = 0.9f;

System.out.println( "0.9f converted to int : " +  (int) value );

value = 1.1f;

System.out.println( "1.1f converted to int : " + (int) value );

}
}

Output
0.9f converted to int : 0
1.1f converted to int : 1

As we can see in the above example, casting a float to int results in downcasting. It simply removes the fraction part and returns the value.

Solution 2

``` public class FloatToIntUsingMathRound {     public static void main( String[] args ) {         float value = 0.9f;                    System.out.println( "0.9f rounded to int  : " +  Math.round( value ));              value = 1.49f;              System.out.println( "1.49f rounded to int : " +  Math.round( value ));              value = 1.5f;        System.out.println( "1.5f rounded to int  : " +  Math.round( value ));     }   } ```

Output :
0.9f   rounded to int   : 1
1.49f rounded to int   : 1
1.5f   rounded to int   : 2

Math.round rounds the float to the closest int value. It simply looks for the middle half value i.e. 0.5,

•   < 0.5 discards the fraction part like 1.49f is rounded to 1
•  >= 0.5  moves the value to the next int value like1.5f is rounded to 2

Note that java Math class has two overloaded method

1. Math.round(float) returns int
2.  Math.round(double) returns long

Eclipse - Server Tomcat v8.5 Server at localhost failed to start.

When I try to launch the tomcat from Eclipse, I encountered the following error Server Tomcat v8.5 Server at localhost failed to start. Solution Step 1  Delete the .snap file located at the following location     eclipse workspace Path\ .metadata\.plugins\org.eclipse.core.resources Step 2 Delete the  tmp0  folder from the following path      eclipse workspace Path \.metadata\.plugins\org.eclipse.wst.server.core Step 3  Delete the server from servers list Step 4  Remove already added Tomcat Server      i)  Click on Define a new Server     ii)  Select Server Runtime Environments     iii) Select the Tomcat Server and remove it as follows Remove Selected Server Step 5 Make sure that correct version of Server is configured in Project Properties Step 6 Restart the Eclipse IDE.

hibernate-release-5.4.4.Final - Required Jars

Introduction Hibernate (Object Relational Mapping framework) is an implementation of Java Persistence API (JPA) specification.   Required Jars for Hibernate 5.4.4 Following Jars resided inside the required folder are the mandatory jars required for Hibernate 5.4.4 antlr-2.7.7.jar byte-buddy-1.9.11.jar classmate-1.3.4.jar dom4j-2.1.1.jar FastInfoset-1.2.15.jar hibernate-commons-annotations-5.1.0.Final.jar hibernate-core-5.4.4.Final.jar istack-commons-runtime-3.0.7.jar jandex-2.0.5.Final.jar javassist-3.24.0-GA.jar javax.activation-api-1.2.0.jar javax.persistence-api-2.2.jar jaxb-api-2.3.1.jar jaxb-runtime-2.3.1.jar jboss-logging-3.3.2.Final.jar jboss-transaction-api_1.2_spec-1.1.1.Final.jar stax-ex-1.8.jar txw2-2.3.1.jar Hibernate 5.4.4 release is compatible with  Java 8 or 11  JPA 2.2 References https://hibernate.org/orm/releases/5.4/