Java中的格式化程序close()方法与示例
close()方法是Java.util.Formatter的内置方法,用于关闭格式化程序。如果它已经关闭,它将无效。关闭它意味着它将释放它已经持有的资源。
语法:
public void close()
参数:该函数不接受任何参数。
返回值:该函数不返回任何内容,它只是关闭格式化程序。因此返回类型为 void。
下面是上述函数的实现:
方案一:
// Java program to implement
// the above function
import java.util.Formatter;
import java.util.Locale;
public class Main {
public static void main(String[] args)
{
// Get the string Buffer
StringBuffer buffer = new StringBuffer();
// Object creation
Formatter frmt
= new Formatter(buffer,
Locale.CANADA);
// Format a new string
String name = "My name is Gopal Dave";
frmt.format("What is your name? \n%s !",
name);
// Print the Formatted string
System.out.println(frmt);
// Prints the formatted string
// again since it is not closed
System.out.println(frmt);
// close the frmt
frmt.close();
}
}
输出:
What is your name?
My name is Gopal Dave !
What is your name?
My name is Gopal Dave !
方案二:
// Java program to implement
// the above function
import java.util.Formatter;
import java.util.Locale;
public class Main {
public static void main(String[] args)
{
// Get the string Buffer
StringBuffer buffer
= new StringBuffer();
// Object creation
Formatter frmt
= new Formatter(buffer,
Locale.CANADA);
// Format a new string
String name = "Java programs are fun";
frmt.format("%s !", name);
System.out.println(frmt);
// close the frmt
frmt.close();
}
}
输出:
Java programs are fun !
参考: https: Java/util/Formatter.html#close()