1. 求最大、最小值方法

#keyname=value

key1=e:/prop_367.txt

key2=e:/cadmodels/prop_367.x_t

key3=stringxxxxxxxxxxxxxx

#注释1

key4=false

key5=true

key6=true

#注释2

key6=0.00762

#注释3

key7=0.00762

......

angleDeg=36

#注释4

key_xCoord=0.03048,0.04572,0.04572,0,0,0.00381,0.0038,0.024384,0.025908,0.028956

key_yCoord=0,0,0.00381,0.00381,0,0,0.0036195,0.0036195,0.003429,0.001524

#轮廓坐标

xCoord_Background=0.0,1.04,1.04,0.6187,0.6187,0.733,0.733,0.0

yCoord_Background=0.0,0.0,0.1524,0.1524,0.005715,0.005715,0.00381,0.00381

2. 使用properties文件读写数据

/**

* @param keyname 属性文件中的键名

* @return result 属性文件中的键值

*/

public String getParam(String keyname) {

Properties prop = new Properties();

InputStream in = null;

String result = null;

try {

in = new FileInputStream(new File("E:/xxx.properties"));

prop.load(in);

result = (String) prop.get(keyname);

} catch (IOException e) {

} finally {

if (in != null) {

try {

in.close();

} catch (IOException e) {

}

}

}

return result;

}

3. 转换一个逗号相隔的数字序列为一个数组

/**

*例如这里的str=“0.0,1.04,1.04,0.6187,0.6187,0.733,0.733,0.0”

*/

public double[] convertStrtoDouble(String str) {

String[] a = str.split(",");

dda = new double[a.length];

for (int i = 0; i < a.length; i++) {

dda[i] = Double.parseDouble(a[i]);

}

return dda;

}

4.写日志、消息到文件

public void writeJobLogFile(String logMessage) {

FileOutputStream fos;

//设置日期格式

SimpleDateFormat date_f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String date_str = date_f.format(new Date());// new Date()为获取当前系统时间

String tmp_str = date_str + ": " + logMessage + "\n";

String jobLogFile = df.getJobLogFile();

try {

fos = new FileOutputStream(jobLogFile, true);

fos.write(tmp_str.getBytes());

fos.close();

} catch (IOException ex) {

Exceptions.printStackTrace(ex);

}

}