import java.text.MessageFormat;
import java.util.Date;
public class test01 {
public static void main(String[] args) {
System.out.println("hello");// print hello
// %s佔位符,輸出字符串
String username = "user1";
int num = 3;
System.out.printf("%s您好,您是第%s位訪客\n", username, num); // prints user1您好,您是第3位訪客
// %f佔位符
double d = 1.2;
float f = 1.2f;
System.out.printf("%f %f", d, f); // prints 1.200000 1.200000
// %1$s佔位符
//%n$ms:代表輸出的是字符串,n代表是第幾個參數,設置m的值可以在輸出之前放置空格,也可以設爲0m,在輸出之前放置m個0
System.out.println(String.format("我是%1$s,我來自%2$s,今年%3$s歲", "中國人", "北京",
"22"));
// prints 我是中國人,我來自北京,今年22歲
// {}佔位符,{}內的數字代表第幾個參數,參數從0開始
String url = "www.baidu.com";
int count = 1000;
System.out.println(MessageFormat
.format("該網站{0}被訪問了 {1} 次.", url, count));
// prints 該網站www.baidu.com被訪問了 1,000 次.
// {}佔位符
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
來源:CSDN
原文:https://blog.csdn.net/gsls200808/article/details/39968749
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