String的几种常见格式化

在Java中，String类提供了几种常见的格式化方法，可以用来格式化字符串输出。下面将介绍几种常见的格式化方法，并给出相应的代码示例和代码注释。

1. 使用String.format()方法进行格式化

javaString name = "Alice";
int age =25;
String formattedString = String.format("My name is %s and I am %d years old", name, age);
System.out.println(formattedString);

javaString name = "Bob";
int age =30;
System.out.printf("My name is %s and I am %d years old
", name, age);

javaString pattern = "My name is {0} and I am {1} years old";
String formattedString = MessageFormat.format(pattern, "Charlie",35);
System.out.println(formattedString);

javaStringJoiner joiner = new StringJoiner(", ", "My favorite fruits are ", ".");
joiner.add("apple").add("banana").add("orange");
String formattedString = joiner.toString();
System.out.println(formattedString);