Java方法重载的使用实战案例

2019-11-26 08:34:24

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本文实例讲述了Java方法重载的使用。分享给大家供大家参考，具体如下：

一重载方法valueOf的使用实战

1 代码

import java.lang.String ;public class OverloadValueOf{  public static void main(String args[]){    byte num_byte  = 12;    short num_short = 34;    int num_int   = 12345;    float num_float   = 12.34f;    boolean b_value = false;    double num_double  = 12.345;    System.out.println("Value of num_byte is " + String.valueOf(num_byte));    System.out.println("Value of num_short is " + String.valueOf(num_short));    System.out.println("Value of num_int is " + String.valueOf(num_int));    System.out.println("Value of num_float is " + String.valueOf(num_float));    System.out.println("Value of num_double is " + String.valueOf(num_double));    System.out.println("Value of b_value is " + String.valueOf(b_value));   }}

2 运行

Value of num_byte is 12
Value of num_short is 34
Value of num_int is 12345
Value of num_float is 12.34
Value of num_double is 12.345
Value of b_value is false

二重载方法println的使用实战

1 代码

public class ShowPrintlnOverload{  public static void main(String args[])  {    System.out.println(123) ;  //输出整型int    System.out.println(12.3) ; //输出双精度型double    System.out.println('A') ;  //输出字符型char    System.out.println(false) ; //输出布尔型boolean    System.out.println("Hello Java!") ;//输出字符串类型String  }}

2 运行