java.math.BigInteger.negate() 返回一個BigInteger,其值是 (-this).
以下是java.math.BigInteger.negate()方法的宣告
public BigInteger negate()
NA
該方法返回一個BigInteger物件的值是 -this
NA
下面的例子顯示math.BigInteger.negate()方法的用法
package com.yiibai; import java.math.*; public class BigIntegerDemo { public static void main(String[] args) { // create 2 BigInteger objects BigInteger bi1, bi2; bi1 = new BigInteger("20"); // assign negate value of bi1 to bi2 bi2 = bi1.negate(); String str = "Negated value of " + bi1 + " is " +bi2; // print bi2 value System.out.println( str ); } }
讓我們編譯和執行上面的程式,這將產生以下結果:
Negated value of 20 is -20