Java.math.BigDecimal.signum()方法範例

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

宣告

以下是java.math.BigDecimal.signum()方法的宣告

public int signum()

引數

• NA

返回值

此方法返回-1，0，或1，此BigDecimal的值分類為負，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 );
    }
}

讓我們來編譯和執行上面的程式，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