Java Float longValue() 方法

26 Dec 2024 | 阅读 2 分钟

Java Float 类的 longValue() 方法在缩小基本值或通过转换为 long 类型后，将此 float 对象的值作为 long 返回。

语法

参数

不适用

返回值

longValue() 方法返回与此 Float 对应的 float 值，该值已转换为 long 类型。

示例 1

public class FloatLongValueExample1{
    public static void main(String[] args) {
        float f1 = 9655;
        Float f2 = new Float(f1);
        // return the long value of double object
        Long val1 = f2.longValue();
        System.out.println("1. "+"Long value for "+f1+" = "+val1);
       //will return the long value by narrowing the primitive value
        Float f3 = new Float(999657587698541166666633335679.675);
        System.out.println("2. "+"Long value for "+f3+" = "+f3.longValue());
        //passing negative integer
        Float f4 = new Float(-86776985679.88675);
        System.out.println("3. '+"Long value for "+f4+" = "+f4.longValue());
        //passing maximum value
        Float f5 = Float.MAX_VALUE;
        System.out.println("4. "+"Long value for "+f5+" = "+f5.longValue());
        //passing minimum value
        Float f6 = Float.MIN_VALUE;
        System.out.println("5. "+"Long value for "+f6+" = "+f6.longValue());

        Float f7 = Float.MIN_NORMAL;
        System.out.println("7. "+"Long value for "+f7+" = "+f7.longValue());


    }
}

输出

1. Long value for 9655.0 = 9655
2. Long value for 9.996576E29 = 9223372036854775807
3. Long value for -8.6776988E10 = -86776987648
4. Long value for 3.4028235E38 = 9223372036854775807
5. Long value for 1.4E-45 = 0
7. Long value for 1.17549435E-38 = 0

示例 2

import java.util.Scanner;

public class FloatLongValueExample2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter three numbers");
        System.out.print("1.");     Float f1 =scanner.nextFloat();
        System.out.print("2.");     Float f2 =scanner.nextFloat();
        System.out.print("3.");     Float f3 =scanner.nextFloat();
        //adding the long values
        Long val1= f1.longValue()+f2.longValue()+f3.longValue();
        System.out.println("1.Sum:     "+f1.longValue()+"+"+f2.longValue()+"+"+f3.longValue()+" = "+ val1);
        //multiplying long value
        Long val2= f1.longValue()*f2.longValue()*f3.longValue();
        System.out.println("1.Mul:     "+f1.longValue()+"*"+f2.longValue()+"*"+f3.longValue()+" = "+ val2);

    }
}

输出

Enter three numbers
1.67.99
2.100.76
3.78.77
1.Sum:     67+100+78 = 245
1.Mul:     67*100*78 = 522600

示例 3

import java.util.Scanner;

public class FloatLongValueExample3 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Enter your annual income");
        Float d1 = scanner.nextFloat();
        Long val1 = d1.longValue() / 12;
        System.out.println("Your monthly income is:"+val1);
         if (val1 < 30000 ) {
            Long l1= val1 + 2000;
            System.out.println("You got an increment of 5000.\nYour new salary is:" +l1);
        }
        else if (val1 >30000 && val1< 80000) {
            Long l1= val1 + 5000;
            System.out.println("You got an increment of 5000.\nYour new salary is:" +l1);
        } else if (val1 > 80000 && val1<100000) {
            Long l2= val1 + 8000;
            System.out.println("You got an increment of 8000.\nYour new salary is:" + l2);
        } else if(val1>100000) {
            Long l3= val1 + 15000;
            System.out.println("You got an increment of 15000.\nYour new salary is:" + l3);
        }
    }
}

输出

Enter your annual income
500000.6588
Your monthly income is:41666
You got an increment of 5000.
Your new salary is:46666

下一主题Java Short parseShort() 方法

我们提供所有技术（如 Java 教程、Android、Java 框架）的教程和面试问题

联系信息

G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India

hr@tpointtech.com

+91-9599086977

关注我们

Python

Java

.Net Framework

AI, ML and Data Science

Cloud Technology

B.Tech and MCA

Web Technology

PHP

Software Testing

Technical Interview

Java Interview

Python

Web Interview

Database Interview

B.Tech / MCA

Important Interview

Software Testing Interview

Company Interviews

Online Compilers

Multiple Choice Questions

Java EnumMap

Java DriverManager

Java ThreadLocal

Java StringBuilder

Java StringBuffer

Java Short

Java Float

Java HashSet

Java ThreadLocalRandom

Java ThreadGroup

Java Double

Java Throwable

Java PriorityQueue

Java Matcher

Java 方法

Java 枚举

Java TreeSet

Java TimeZone

Java System

Java Locale

Java Scanner

Java Random

Java Currency

Java Character

Java Timertask

Java Timer

Java Process

Java Calendar

Java Float longValue() 方法

语法

参数

返回值

示例 1

示例 2

示例 3

相关帖子

Java Float valueOf() 方法

订阅 Tpoint Tech

联系信息

关注我们

教程

面试题

在线编译器