java.nio.IntBuffer类的equals()方法用于检查给定的缓冲区是否等于另一个对象。
当且仅当两个int缓冲区相等时,
- 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
- 其余元素的两个序列(与它们的起始位置无关)是按点排列的
等于。
如果(a == b)||,则此方法认为两个int元素a和b相等。 (Int.isNaN(a)&& Int.isNaN(b))。与Int.equals(Object)不同,值-0和+0被视为相等。
一个int缓冲区不等于任何其他类型的对象。
用法:
public boolean equals(Object ob)
参数:此方法将ob(与该缓冲区进行比较的对象)作为参数。
返回值:仅当此缓冲区等于给定对象时,此方法返回true。
下面是说明equals()方法的示例:
范例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 IntBuffer 1
int capacity1 = 10;
// Declaring the capacity of the IntBuffer 2
int capacity2 = 10;
// Creating the IntBuffer
try {
// creating object of Intbuffer 1
// and allocating size capacity
IntBuffer ib1 = IntBuffer.allocate(capacity1);
// creating object of Intbuffer 2
// and allocating size capacity
IntBuffer ib2 = IntBuffer.allocate(capacity2);
// putting the value in Intbuffer 1
ib1.put(8);
ib1.put(2, 9);
ib1.rewind();
// putting the value in Intbuffer 2
ib2.put(8);
ib2.put(2, 9);
ib2.rewind();
// print the IntBuffer 1
System.out.println(" IntBuffer 1: "
+ Arrays.toString(ib1.array()));
// print the IntBuffer 2
System.out.println(" IntBuffer 2: "
+ Arrays.toString(ib2.array()));
// checking the equality of both IntBuffer
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");
}
}
}
输出:
IntBuffer 1: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0] IntBuffer 2: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0] Both are equal
范例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 IntBuffer 1
int capacity1 = 10;
// Declaring the capacity of the IntBuffer 2
int capacity2 = 5;
// Creating the IntBuffer
try {
// creating object of Intbuffer 1
// and allocating size capacity
IntBuffer ib1 = IntBuffer.allocate(capacity1);
// creating object of Intbuffer 2
// and allocating size capacity
IntBuffer ib2 = IntBuffer.allocate(capacity2);
// putting the value in Intbuffer 1
ib1.put(8);
ib1.put(2, 9);
ib1.rewind();
// putting the value in Intbuffer 2
ib2.put(8);
ib2.put(2, 9);
ib2.rewind();
// print the IntBuffer 1
System.out.println(" IntBuffer 1: "
+ Arrays.toString(ib1.array()));
// print the IntBuffer 2
System.out.println(" IntBuffer 2: "
+ Arrays.toString(ib2.array()));
// checking the equality of both IntBuffer
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");
}
}
}
输出:
IntBuffer 1: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0] IntBuffer 2: [8, 0, 9, 0, 0] Both are not equal
范例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 IntBuffer 1
int capacity1 = 10;
// Declaring the capacity of the IntBuffer 2
int capacity2 = 10;
// Creating the IntBuffer
try {
// creating object of Intbuffer 1
// and allocating size capacity
IntBuffer ib1 = IntBuffer.allocate(capacity1);
// creating object of Intbuffer 2
// and allocating size capacity
IntBuffer ib2 = IntBuffer.allocate(capacity2);
// putting the value in Intbuffer 1
ib1.put(8);
ib1.put(2, 9);
ib1.rewind();
// putting the value in Intbuffer 2
ib2.put(8);
ib2.put(2, 9);
ib2.put(3, 7);
ib2.put(4, 4);
ib2.rewind();
// print the IntBuffer 1
System.out.println(" IntBuffer 1: "
+ Arrays.toString(ib1.array()));
// print the IntBuffer 2
System.out.println(" IntBuffer 2: "
+ Arrays.toString(ib2.array()));
// checking the equality of both IntBuffer
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");
}
}
}
输出:
IntBuffer 1: [8, 0, 9, 0, 0, 0, 0, 0, 0, 0] IntBuffer 2: [8, 0, 9, 7, 4, 0, 0, 0, 0, 0] Both are not equal
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注:本文由纯净天空筛选整理自nitin_sharma大神的英文原创作品 IntBuffer equals() method in Java。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。