Java 中的 BigInteger 等于()方法
原文:https://www . geesforgeks . org/big integer-equals-method-in-Java/
Java . math . BigInteger . equals(Object x)方法将此 BigInteger 与作为参数传递的对象进行比较，如果两者的值相等，则返回 true，否则返回 false。
语法:
public boolean equals(Object x)
参数:该方法接受单个强制参数 x ，该参数是要与大整数对象进行比较的对象。
返回:当且仅当作为参数传递的对象是一个大整数，其值等于应用该方法的大整数对象时，该方法返回布尔值 true。否则将返回 false。
例:
Input: BigInteger1=2345, BigInteger2=7456
Output: false
Explanation: BigInteger1.equals(BigInteger2)=false.
Input: BigInteger1=7356, BigInteger2=7456
Output: true
Explanation: BigInteger1.equals(BigInteger2)=true.
下面的程序说明了 BigInteger 类的 equals()方法:
例 1: 两者价值相等时。
// Java program to demonstrate equals() method of BigInteger
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
// Creating 2 BigInteger objects
BigInteger b1, b2;
b1 = new BigInteger("321456");
b2 = new BigInteger("321456");
// apply equals() method
boolean response = b1.equals(b2);
// print result
if (response) {
System.out.println("BigInteger1 " + b1
+ " and BigInteger2 "
+ b2 + " are equal");
}
else {
System.out.println("BigInteger1 " + b1
+ " and BigInteger2 "
+ b2 + " are not equal");
}
}
}
输出:
BigInteger1 321456 and BigInteger2 321456 are equal
例 2: 两者价值不相等时。
// Java program to demonstrate equals() method of BigInteger
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
// Creating 2 BigInteger objects
BigInteger b1, b2;
b1 = new BigInteger("321456");
b2 = new BigInteger("456782");
// apply equals() method
boolean response = b1.equals(b2);
// print result
if (response) {
System.out.println("BigInteger1 " + b1
+ " and BigInteger2 "
+ b2 + " are equal");
}
else {
System.out.println("BigInteger1 " + b1
+ " and BigInteger2 " + b2 + " are not equal");
}
}
}
输出:
BigInteger1 321456 and BigInteger2 456782 are not equal
示例 3: 当作为参数传递的对象不是大整数时。
// Java program to demonstrate equals() method of BigInteger
import java.math.BigInteger;
public class Main6 {
public static void main(String[] args)
{
// Creating BigInteger object
BigInteger b1;
b1 = new BigInteger("321456");
String object = "321456";
// apply equals() method
boolean response = b1.equals(object);
// print result
if (response) {
System.out.println("BigInteger1 " + b1
+ " and String Object "
+ object + " are equal");
}
else {
System.out.println("BigInteger1 " + b1
+ " and String Object "
+ object + " are not equal");
}
}
}
输出:
BigInteger1 321456 and String Object 321456 are not equal
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