附件大小格式化计算

 iLife's 博客http://blog.csdn.net/fei1502816 

public static String getFjSize(String size){String str = "0";DecimalFormat df2  = new DecimalFormat("###.0"); if(null!=size && size.length()>0){int s1 = Integer.parseInt(size);if(s1/1024<1024){//如果小于1Mstr = df2.format(((double)s1/(double)1024))+"Kb";//System.out.println(df2.format(((double)s1/(double)1024))+"kb"); }else if(s1/1024>=1024){//如果大于1Mstr = df2.format((s1/(1024*1024)))+"MB";//System.out.println(df2.format(((double)s1/(double)(1024*1024)))+"MB"); }else if(s1/1024>=1024*1024){//如果大于1024MBstr = df2.format((s1/(1024*1024*1024)))+"G";//System.out.println(df2.format(((double)s1/(double)(1024*1024*1024)))+"G"); }}return str;}