Java中Properties的使用详解

Properties properties = new Properties();
FileInputStream fis = new FileInputStream("huhx.properties");
properties.load(fis);
System.out.println(properties.get("name")); 

PrintStream printStream = System.out;
properties.list(printStream); 

public void list(PrintStream out) {
out.println("-- listing properties --");
Hashtable h = new Hashtable();
enumerate(h);
for (Enumeration e = h.keys() ; e.hasMoreElements() ;) {
String key = (String)e.nextElement();
String val = (String)h.get(key);
if (val.length() > 40) {
val = val.substring(0, 37) + "...";
}
out.println(key + "=" + val);
}
}

OutputStream outputStream = new FileOutputStream("huhx.txt");
properties.store(outputStream, "comments"); 

OutputStream outputStream2 = new FileOutputStream("huhx.xml");
properties.storeToXML(outputStream2, "comments"); 

#comments
#Thu May 19 19:19:36 CST 2016
name=huhx 

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>
<comment>comments</comment>
<entry key="name">huhx</entry>
</properties> 

package com.huhx.linux;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.Properties;
public class PropertiesTest {
public static void main(String[] args) throws Exception {
// 一般Properties的使用
Properties properties = new Properties();
FileInputStream fis = new FileInputStream("huhx.properties");
properties.load(fis);
System.out.println(properties.get("name"));
// 以下是测试的部分
PrintStream printStream = System.out;
properties.list(printStream);
OutputStream outputStream = new FileOutputStream("huhx.txt");
properties.store(outputStream, "comments");
OutputStream outputStream2 = new FileOutputStream("huhx.xml");
properties.storeToXML(outputStream2, "comments");
}
}