Java方法重载的使用实战案例

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));
   }
}

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
  }
}