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📜  Java中的 MessageFormat toPattern() 方法与示例

📅  最后修改于: 2022-05-13 01:55:45.519000             🧑  作者: Mango

Java中的 MessageFormat toPattern() 方法与示例

Java.text.MessageFormat类的toPattern()方法用于获取此消息格式对象的当前模式的字符串表示形式。
句法:

public String toPattern()

参数:此方法不接受任何参数作为参数。
返回值:此方法返回此消息格式对象的当前模式的字符串表示形式。
下面是说明toPattern()方法的示例:
示例 1:

Java
// Java program to demonstrate
// toPattern() method
 
import java.text.*;
import java.util.*;
import java.io.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing  MessageFormat
        MessageFormat mf
            = new MessageFormat("{0, number, #}, {2, date, #.#}, {4, time}");
 
        // getting the pattern
        // of this MessageFormat Object
        // using toPattern() method
        String patt = mf.toPattern();
 
        // display the result
        System.out.println("current pattern of MessageFormat Object : " + patt);
    }
}


Java
// Java program to demonstrate
// toPattern() method
 
import java.text.*;
import java.util.*;
import java.io.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing  MessageFormat
        MessageFormat mf
            = new MessageFormat("{0, number, #}, {4, time}");
 
        // getting the pattern
        // of this MessageFormat Object
        // using toPattern() method
        String patt = mf.toPattern();
 
        // display the result
        System.out.println("current pattern of MessageFormat Object : " + patt);
    }
}


输出:
current pattern of MessageFormat Object : {0, number, #}, {2, date, #.#}, {4, time}

示例 2:

Java

// Java program to demonstrate
// toPattern() method
 
import java.text.*;
import java.util.*;
import java.io.*;
 
public class GFG {
    public static void main(String[] argv)
    {
        // creating and initializing  MessageFormat
        MessageFormat mf
            = new MessageFormat("{0, number, #}, {4, time}");
 
        // getting the pattern
        // of this MessageFormat Object
        // using toPattern() method
        String patt = mf.toPattern();
 
        // display the result
        System.out.println("current pattern of MessageFormat Object : " + patt);
    }
}
输出:
current pattern of MessageFormat Object : {0, number, #}, {4, time}

参考: https://docs.oracle.com/javase/9/docs/api/ Java/text/MessageFormat.html#toPattern–