占位符

String domain = "www.ykmaiz.com";
String domain1 = "该域名%s被访问了%s次.";
int iVisit = 0;
System.out.printf(String.format(domain1, domain , iVisit));

String domain = "www.ykmaiz.com";
int iVisit = 0;
System.out.println(MessageFormat.format("该域名{0}被访问了 {1} 次.", domain , iVisit));