这个 JAVA数学大十进制。hashCode() 返回的哈希代码 这 大十进制。对于两个具有相同值和不同比例(如4743.0和4743.00)的BigDecimal对象,哈希代码通常不相同。
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语法:
public int hashCode()
参数: 此方法不接受任何参数。
返回值: 此方法返回的整数值等于BigDecimal对象的hashCode值。
例如:
Input : BigDecimal = 67891 Output : Hashcode : 2104621 Input : BigDecimal = 67891.000 Output : Hashcode : 2104621003
下面的程序演示了BigDecimal类的hashCode()函数: 项目1:
// Java program to demonstrate hashCode() method import java.io.*; import java.math.*; public class GFG { public static void main(String[] args) { // Creating a BigDecimal object BigDecimal b; // Assigning value b = new BigDecimal( 4743 ); System.out.print( "HashCode for " + b + " is " ); System.out.println(b.hashCode()); } } |
输出:
HashCode for 4743 is 147033
项目2: 这个程序将说明两个不同的大小数的哈希代码是不同的。
// Java program to demonstrate hashCode() method import java.io.*; import java.math.*; public class GFG { public static void main(String[] args) { // Creating 2 BigDecimal objects BigDecimal b1, b2; // Assigning values b1 = new BigDecimal( "4743" ); b2 = new BigDecimal( "4743.000" ); int i1, i2; i1 = b1.hashCode(); i2 = b2.hashCode(); if (i1 == i2) { System.out.println( "HashCodes of " + b1 + " and " + b2 + " are equal." ); System.out.println( "Both their HashCodes are " + i1 + "." ); } else { System.out.println( "HashCodes of " + b1 + " and " + b2 + " are not equal." ); System.out.println( "HashCodes of " + b1 + " is " + i1 + " and " + b2 + " is " + i2 + "." ); } } } |
输出:
HashCodes of 4743 and 4743.000 are not equal. HashCodes of 4743 is 147033 and 4743.000 is 147033003.
参考: https://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html#hashCode()
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