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📜  Java中的 PrintStream println(float) 方法及示例

📅  最后修改于: 2022-05-13 01:54:53.554000             🧑  作者: Mango

Java中的 PrintStream println(float) 方法及示例

Java中PrintStream类的println(float)方法用于在流上打印指定的float值,然后换行。这个浮点值被作为一个参数。

句法:

public void println(float floatValue)

参数:此方法接受一个强制参数floatValue ,它是要写入流的浮点值。

返回值:此方法不返回任何值。

下面的方法说明了 println(float) 方法的工作:

方案一:

// Java program to demonstrate
// PrintStream println(float) method
  
import java.io.*;
  
class GFG {
    public static void main(String[] args)
    {
  
        try {
  
            // Create a PrintStream instance
            PrintStream printr
                = new PrintStream(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);
        }
    }
}
输出:
4.5

方案二:

// Java program to demonstrate
// PrintStream println(float) method
  
import java.io.*;
  
class GFG {
    public static void main(String[] args)
    {
  
        try {
  
            // Create a PrintStream instance
            PrintStream printr
                = new PrintStream(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);
        }
    }
}
输出:
1.65