Java 中 printwister println(float)方法,示例

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

Java 中 PrintWriter 类的 println(float) 方法用于在流上打印指定的 float 值,然后换行。这个浮点值被当作一个参数。

语法:

public void println(float floatValue)

参数:该方法接受一个强制参数浮点值,即要写入流的浮点值。

返回值:此方法不返回值。

下面的方法说明了 println(float)方法的工作原理:

程序 1:

// Java program to demonstrate
// PrintWriter println(float) 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 float value '4.5'
            // to this stream using println() method
            // This will put the floatValue in the
            // stream till it is printed on the console
            printr.println(4.5);

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

Output:

4.5

程序 2:

// Java program to demonstrate
// PrintWriter println(float) 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 float value '1.65'
            // to this stream using println() method
            // This will put the floatValue in the
            // stream till it is printed on the console
            printr.println(1.65);

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

Output:

1.65