import java.text.MessageFormat;
import java.util.Date;
public class test01 {
public static void main(String[] args) {
System.out.println("hello");// print hello
// %s占位符,输出字符串
String username = "user1";
int num = 3;
System.out.printf("%s您好,您是第%s位访客\n", username, num); // prints user1您好,您是第3位访客
// %f占位符
double d = 1.2;
float f = 1.2f;
System.out.printf("%f %f", d, f); // prints 1.200000 1.200000
// %1$s占位符
//%n$ms:代表输出的是字符串,n代表是第几个参数,设置m的值可以在输出之前放置空格,也可以设为0m,在输出之前放置m个0
System.out.println(String.format("我是%1$s,我来自%2$s,今年%3$s岁", "中国人", "北京",
"22"));
// prints 我是中国人,我来自北京,今年22岁
// {}占位符,{}内的数字代表第几个参数,参数从0开始
String url = "www.baidu.com";
int count = 1000;
System.out.println(MessageFormat
.format("该网站{0}被访问了 {1} 次.", url, count));
// prints 该网站www.baidu.com被访问了 1,000 次.
// {}占位符
String template = "Welcome {0}! Your last login was {1}";
String output = MessageFormat.format(template, new Object[] { "Python",
new Date().toString() });
System.out.println(output);
// prints Welcome Python! Your last login was Fri Oct 10 20:47:00 CST 2014
}
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作者:gsls200808
来源:CSDN
原文:https://blog.csdn.net/gsls200808/article/details/39968749
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