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NumberFormat nf = NumberFormat.getIntegerInstance();
double v=12.6;
System.out.println(nf.format(v));
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DecimalFormat df=new DecimalFormat("#.##");
double v=12.126;
String s=df.format(v);
System.out.println(s);
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·½·¨¶þ:
double v=-32.126;
String s=v+"";
System.out.println(s.substring(0, s.indexOf(".")+3));
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NumberFormat nf = NumberFormat.getPercentInstance();
double s=0.6145;
System.out.println(nf.format(s));
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package com.fengfei.test;
public class GetNumber {
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* @param args
*/
public static void main(String[] args) {
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System.out.println(System.getProperty("java.vendor")); //JavaÌṩÉÌÃû³Æ
System.out.println(System.getProperty("java.vendor.url")); //JavaÌṩÉÌÍøÕ¾
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