com.home.ln_spring.ch5.lifecycle.DestructiveBean.java Source code

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Here is the source code for com.home.ln_spring.ch5.lifecycle.DestructiveBean.java

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package com.home.ln_spring.ch5.lifecycle;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.support.GenericXmlApplicationContext;

/**
 *
 * @author vitaliy
 */
public class DestructiveBean implements InitializingBean {

    private InputStream is = null;

    public String filePath = null;

    @Override
    public void afterPropertiesSet() throws Exception {

        System.out.println("Initializing Bean");

        if (filePath == null) {
            throw new IllegalArgumentException(
                    "You must specify the filePath " + "property of " + DestructiveBean.class);
        }

        is = new FileInputStream(filePath);
    }

    public void destroy() {
        System.out.println("Destroying Bean");

        if (is != null) {
            try {
                System.out.println(is.read());
                is.close();
                is = null;
            } catch (IOException ex) {
                System.out.println("WARN: An IOException occured trying " + "to close the InputStream");
            }
        }
    }

    public void setFilePath(String filePath) {
        this.filePath = filePath;
    }

    public static void main(String[] args) {
        GenericXmlApplicationContext ctx = new GenericXmlApplicationContext();
        ctx.load("classpath:lifecycle/disposeMethod.xml");
        ctx.refresh();

        DestructiveBean bean = (DestructiveBean) ctx.getBean("destructiveBean");
        System.out.println("Calling destroy()");
        ctx.destroy();
        System.out.println("Called destroy()");
    }
}