JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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How to create and store property file dynamically?


Description:

We can also create property files dynamically. First creat Properties object, add all property key-value pair by using setProperty() method. Then write this file to FileOutputStream object to store is as a property file. Below example shows how to create it.


Code:
package com.java2novice.files;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Properties;

public class MyPropertyFileStore {

	public static void main(String a[]) throws IOException{
		
		OutputStream os = null;
		Properties prop = new Properties();
		prop.setProperty("name", "java2novice");
		prop.setProperty("domain", "www.java2novice.com");
		prop.setProperty("email", "[email protected]");
		try {
			os = new FileOutputStream("MyProp.properties");
			prop.store(os, "Dynamic Property File");
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		
	}
}
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Knowledge Centre
ServletOuptputStream Vs PrintWriter
ServletOutputStream: ServletResponse.getOutputStream() returns a ServletOutputStream suitable for writing binary data in the response. The servlet container does not encode the binary data, it sends the raw data as it is.

PrintWriter: ServletResponse.getWriter() returns PrintWriter object which sends character text to the client. The PrintWriter uses the character encoding returned by getCharacterEncoding(). If the response's character encoding has not been specified then it does default character encoding.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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