java.math.BigInteger.not() 返回一個BigInteger,其值是(~this)。此方法返回一個負值,當且僅當此BigInteger非負.
以下是java.math.BigInteger.not()方法的宣告
public BigInteger not()
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.not()方法的用法
package com.yiibai; import java.math.*; public class BigIntegerDemo { public static void main(String[] args) { // create 4 BigInteger objects BigInteger bi1, bi2, bi3, bi4; // assign values to bi1, bi2 bi1 = new BigInteger("6"); bi2 = new BigInteger("-6"); // perform not operation on bi1 and bi2 bi3 = bi1.not(); bi4 = bi2.not(); String str1 = "Result of not operation on " + bi1 +" gives " +bi3; String str2 = "Result of not operation on " + bi2 +" gives " +bi4; // print bi3, bi4 values System.out.println( str1 ); System.out.println( str2 ); } }
讓我們編譯和執行上面的程式,這將產生以下結果:
Result of not operation on 6 gives -7 Result of not operation on -6 gives 5