Java 中的 LongBuffer equals()方法
原文:https://www . geesforgeks . org/longbuffer-equals-method-in-Java/
java.nio.LongBuffer 类的 equals() 方法用于检查给定的缓冲区是否等于另一个对象。
两个长缓冲区相等当且仅当，
- 它们具有相同的元素类型，
- 它们具有相同数量的剩余元素，并且
- 剩余元素的两个序列，无论它们的起始位置如何，都是相等的。
如果(a == b) || (Long.isNaN(a)和& Long.isNaN(b))，此方法认为两个 Long 元素 a 和 b 相等。与 Long.equals(对象)不同，值-0 和+0 被认为是相等的。
长缓冲区不等于任何其他类型的对象。
语法:
public boolean equals(Object ob)
参数:该方法以 ob (该缓冲区要与之比较的对象)为参数。
返回值:当且仅当该缓冲区等于给定对象时，该方法返回真。
以下是说明等于()方法的示例:
实施例 1:
// Java program to demonstrate
// equals() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the LongBuffer 1
int capacity1 = 10;
// Declaring the capacity of the LongBuffer 2
int capacity2 = 10;
// Creating the LongBuffer
try {
// creating object of Longbuffer 1
// and allocating size capacity
LongBuffer ib1 = LongBuffer.allocate(capacity1);
// creating object of Longbuffer 2
// and allocating size capacity
LongBuffer ib2 = LongBuffer.allocate(capacity2);
// putting the value in Longbuffer 1
ib1.put(8);
ib1.put(2, 9);
ib1.rewind();
// putting the value in Longbuffer 2
ib2.put(8);
ib2.put(2, 9);
ib2.rewind();
// prLong the LongBuffer 1
System.out.println(" LongBuffer 1: "
+ Arrays.toString(ib1.array()));
// prLong the LongBuffer 2
System.out.println(" LongBuffer 2: "
+ Arrays.toString(ib2.array()));
// checking the equality of both LongBuffer
boolean ibb = ib1.equals(ib2);
// checking if else condition
if (ibb)
System.out.println("Both are equal");
else
System.out.println("Both are not equal");
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
}
}
Output:
LongBuffer 1: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0]
LongBuffer 2: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0]
Both are equal
实施例 2:
// Java program to demonstrate
// equals() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the LongBuffer 1
int capacity1 = 10;
// Declaring the capacity of the LongBuffer 2
int capacity2 = 5;
// Creating the LongBuffer
try {
// creating object of Longbuffer 1
// and allocating size capacity
LongBuffer ib1 = LongBuffer.allocate(capacity1);
// creating object of Longbuffer 2
// and allocating size capacity
LongBuffer ib2 = LongBuffer.allocate(capacity2);
// putting the value in Longbuffer 1
ib1.put(8);
ib1.put(2, 9);
ib1.rewind();
// putting the value in Longbuffer 2
ib2.put(8);
ib2.put(2, 9);
ib2.rewind();
// prLong the LongBuffer 1
System.out.println(" LongBuffer 1: "
+ Arrays.toString(ib1.array()));
// prLong the LongBuffer 2
System.out.println(" LongBuffer 2: "
+ Arrays.toString(ib2.array()));
// checking the equality of both LongBuffer
boolean ibb = ib1.equals(ib2);
// checking if else condition
if (ibb)
System.out.println("Both are equal");
else
System.out.println("Both are not equal");
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
}
}
Output:
LongBuffer 1: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0]
LongBuffer 2: [8, 0, 9, 0, 0]
Both are not equal
实施例 3:
// Java program to demonstrate
// equals() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the LongBuffer 1
int capacity1 = 10;
// Declaring the capacity of the LongBuffer 2
int capacity2 = 10;
// Creating the LongBuffer
try {
// creating object of Longbuffer 1
// and allocating size capacity
LongBuffer ib1 = LongBuffer.allocate(capacity1);
// creating object of Longbuffer 2
// and allocating size capacity
LongBuffer ib2 = LongBuffer.allocate(capacity2);
// putting the value in Longbuffer 1
ib1.put(8);
ib1.put(2, 9);
ib1.rewind();
// putting the value in Longbuffer 2
ib2.put(8);
ib2.put(2, 9);
ib2.put(3, 7);
ib2.put(4, 4);
ib2.rewind();
// prLong the LongBuffer 1
System.out.println(" LongBuffer 1: "
+ Arrays.toString(ib1.array()));
// prLong the LongBuffer 2
System.out.println(" LongBuffer 2: "
+ Arrays.toString(ib2.array()));
// checking the equality of both LongBuffer
boolean ibb = ib1.equals(ib2);
// checking if else condition
if (ibb)
System.out.println("Both are equal");
else
System.out.println("Both are not equal");
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
}
}
Output:
LongBuffer 1: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0]
LongBuffer 2: [8, 0, 9, 7, 4, 0, 0, 0, 0, 0]
Both are not equal
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