get()
java.nio.FloatBuffer类的get()方法用于读取给定缓冲区当前位置的浮点数,然后递增该位置。
用法:
public abstract float get()
返回值:此方法返回缓冲区当前位置的浮点值。
抛出:此方法抛出BufferUnderflowException-如果缓冲区的当前位置不小于其限制,则抛出此异常。
下面是说明get()方法的示例:
范例1:
// Java program to demonstrate
// get() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the FloatBuffer
int capacity = 5;
// Creating the FloatBuffer
try {
// creating object of floatbuffer
// and allocating size capacity
FloatBuffer fb = FloatBuffer.allocate(capacity);
// putting the value in floatbuffer
fb.put(8.56F);
fb.put(9.61F);
fb.put(1.24F);
fb.rewind();
// print the FloatBuffer
System.out.println("Original FloatBuffer: "
+ Arrays.toString(fb.array()));
// Reads the float at this buffer's current position
// using get() method
float value = fb.get();
// print the Float value
System.out.println("\nFloat Value:" + value);
// Reads the float at this buffer's next position
// using get() method
float value1 = fb.get();
// print the Float value
System.out.print("\nNext Float Value:" + value1);
}
catch (IllegalArgumentException e) {
System.out.println("\nIllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("\nReadOnlyBufferException catched");
}
catch (BufferUnderflowException e) {
System.out.println("\nException throws:" + e);
}
}
}
输出:
Original FloatBuffer: [8.56, 9.61, 1.24, 0.0, 0.0] Float Value:8.56 Next Float Value:9.61
范例2:
// Java program to demonstrate
// get() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the FloatBuffer
int capacity = 3;
// Creating the FloatBuffer
try {
// creating object of floatbuffer
// and allocating size capacity
FloatBuffer fb = FloatBuffer.allocate(capacity);
// putting the value in floatbuffer
fb.put(8.56F);
fb.put(9.61F);
// print the FloatBuffer
System.out.println("Original FloatBuffer: "
+ Arrays.toString(fb.array()));
// Reads the float at this buffer's current position
// using get() method
float value = fb.get();
// print the Float value
System.out.println("\nFloat Value:" + value);
// Reads the float at this buffer's next position
// using get() method
System.out.print("\nsince the buffer current position is incremented");
System.out.print(" to greater than its limit ");
float value1 = fb.get();
// print the Float value
System.out.print("\nNext Float Value:" + value1);
}
catch (IllegalArgumentException e) {
System.out.println("\nIllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("\nReadOnlyBufferException catched");
}
catch (BufferUnderflowException e) {
System.out.println("\nException throws:" + e);
}
}
}
输出:
Original FloatBuffer: [8.56, 9.61, 0.0] Float Value:0.0 since the buffer current position is incremented to greater than its limit Exception throws:java.nio.BufferUnderflowException
get(int index)
FloatBuffer的get(int index)方法用于读取指定索引处的文章。
用法:
public abstract float get(int index)
参数:此方法将索引(将从其读取浮点数的索引)作为参数。
返回值:此方法返回给定索引处的float值。
异常:此方法引发IndexOutOfBoundsException。如果index为负或不小于缓冲区的限制,则抛出此异常。
以下示例说明了get(int index)方法:
范例1:
// Java program to demonstrate
// get(int index) method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the FloatBuffer
int capacity = 3;
// Creating the FloatBuffer
try {
// creating object of floatbuffer
// and allocating size capacity
FloatBuffer fb = FloatBuffer.allocate(capacity);
// putting the value in floatbuffer
fb.put(8.56F);
fb.put(9.61F);
fb.put(6.61F);
// print the FloatBuffer
System.out.println("Original FloatBuffer: "
+ Arrays.toString(fb.array()));
// Reads the float at the index 0 of the floatbuffer
// using get() method
float value0 = fb.get(0);
// print the Float value
System.out.println("\nFloat Value at index 0:" + value0);
// Reads the float at the index 1 of the floatbuffer
// using get() method
float value1 = fb.get(1);
// print the Float value
System.out.println("\nFloat Value at index 1:" + value1);
// Reads the float at the index 2 of the floatbuffer
// using get() method
float value2 = fb.get(2);
// print the Float value
System.out.println("\nFloat Value at index 2:" + value2);
}
catch (IllegalArgumentException e) {
System.out.println("\nIllegalArgumentException catched");
}
catch (IndexOutOfBoundsException e) {
System.out.println("\nReadOnlyBufferException catched");
}
catch (BufferUnderflowException e) {
System.out.println("\nException throws:" + e);
}
}
}
输出:
Original FloatBuffer: [8.56, 9.61, 6.61] Float Value at index 0:8.56 Float Value at index 1:9.61 Float Value at index 2:6.61
范例2:
// Java program to demonstrate
// get() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the FloatBuffer
int capacity = 3;
// Creating the FloatBuffer
try {
// creating object of floatbuffer
// and allocating size capacity
FloatBuffer fb = FloatBuffer.allocate(capacity);
// putting the value in floatbuffer
fb.put(8.56F);
fb.put(9.61F);
fb.put(6.61F);
// print the FloatBuffer
System.out.println("Original FloatBuffer: "
+ Arrays.toString(fb.array()));
// Reads the float at the index 0 of the floatbuffer
// using get() method
float value0 = fb.get(0);
// print the Float value
System.out.println("\nFloat Value at index 0:" + value0);
// Reads the float at the index 1 of the floatbuffer
// using get() method
float value1 = fb.get(1);
// print the Float value
System.out.println("\nFloat Value at index 1:" + value1);
// Reads the float at the index 2 of the floatbuffer
// using get() method
System.out.println("\nTrying to get the float"
+ " of index greater than its limit ");
float value2 = fb.get(4);
// print the Float value
System.out.println("\nFloat Value at index 2:" + value2);
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception thrown:" + e);
}
catch (BufferUnderflowException e) {
System.out.println("Exception throws:" + e);
}
}
}
输出:
Original FloatBuffer: [8.56, 9.61, 6.61] Float Value at index 0:8.56 Float Value at index 1:9.61 Trying to get the float of index greater than its limit Exception thrown:java.lang.IndexOutOfBoundsException
相关用法
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- Java FloatBuffer rewind()用法及代码示例
- Java FloatBuffer clear()用法及代码示例
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- Java FloatBuffer equals()用法及代码示例
- Java FloatBuffer duplicate()用法及代码示例
- Java FloatBuffer array()用法及代码示例
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- Java FloatBuffer compareTo()用法及代码示例
- Java FloatBuffer wrap()用法及代码示例
- Java FloatBuffer limit()用法及代码示例
注:本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 FloatBuffer get() methods in Java with Examples。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。