PrintWriter 用 Java 打印(双)方法,示例

原文:https://www . geesforgeks . org/print writer-print double-method-in-Java-with-examples/

Java 中 PrintWriter 类的 print(double) 方法用于在流上打印指定的 double 值。这个双精度值被作为一个参数。

语法:

public void print(double doubleValue)

参数:该方法接受一个强制参数双值,这是要写入流的双值。

返回值:此方法不返回值。

下面的方法说明了打印(双)的工作方法:

程序 1:

// Java program to demonstrate
// PrintWriter print(double) method

import java.io.*;

class GFG {
    public static void main(String[] args)
    {

        try {

            // Create a PrintWriter instance
            PrintWriter printr
                = new PrintWriter(System.out);

            // Print the double value '4.5'
            // to this stream using print() method
            // This will put the doubleValue in the
            // stream till it is printed on the console
            printr.print(4.5);

            printr.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

4.5

程序 2:

// Java program to demonstrate
// PrintWriter print(double) method

import java.io.*;

class GFG {
    public static void main(String[] args)
    {

        try {

            // Create a PrintWriter instance
            PrintWriter printr
                = new PrintWriter(System.out);

            // Print the double value '1.65'
            // to this stream using print() method
            // This will put the doubleValue in the
            // stream till it is printed on the console
            printr.print(1.65);

            printr.flush();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

1.65