Java.math.BigDecimal.signum()方法實例

java.math.BigDecimal.signum() 返回此BigDecimal的正負號函數。

聲明

以下是java.math.BigDecimal.signum()方法的聲明

public int signum()

參數

• NA

返回值

此方法返回-1，0，或1，此BigDecimal的值分類爲負，零或正值。

異常

• NA

例子

下面的例子顯示math.BigDecimal.signum()方法的用法

package com.yiibai; import java.math.*; public class BigDecimalDemo { public static void main(String[] args) { // create 3 BigDecimal objects BigDecimal bg1, bg2, bg3; // create 3 int objects int i1, i2, i3; bg1 = new BigDecimal("123"); bg2 = new BigDecimal("0"); bg3 = new BigDecimal("-12"); // assign the signum values of bg1,bg2,bg3 to i1,i2,i3 respectively i1 = bg1.signum(); i2 = bg2.signum(); i3 = bg3.signum(); String str1 = "The Result of Signum function on " + bg1 + " is " + i1; String str2 = "The Result of Signum function on " + bg2 + " is " + i2; String str3 = "The Result of Signum function on " + bg3 + " is " + i3; // print i1,i2,i3 values System.out.println( str1 ); System.out.println( str2 ); System.out.println( str3 ); } }

讓我們來編譯和運行上面的程序，這將產生以下結果：

The Result of Signum function on 123 is 1 The Result of Signum function on 0 is 0 The Result of Signum function on -12 is -1