java.nio.ShortBuffer類的limit()方法用於修改此ShortBuffer的限製。此方法將要設置的限製作為參數,並將其設置為此Buffer的新限製。如果此緩衝區的標記已經定義並且大於新指定的限製,則不會設置並丟棄此新限製。
用法:
public final ShortBuffer limit(int newLimit)
參數:此方法接受參數newLimit,它是限製的新整數值。
返回值:在將指定的新限製設置為該緩衝區的新限製之後,此方法將返回此緩衝區。
下麵是說明limit()方法的示例:
範例1:
// Java program to demonstrate
// limit() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// defining and allocating ShortBuffer
// using allocate() method
ShortBuffer shortBuffer
= ShortBuffer.allocate(4);
// put short value in ShortBuffer
// using put() method
shortBuffer.put((short)20);
shortBuffer.put((short)30);
// print the short buffer
System.out.println(
"ShortBuffer before "
+ "setting buffer's limit: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
// Limit the shortBuffer
// using limit() method
shortBuffer.limit(1);
// print the short buffer
System.out.println(
"\nShortBuffer after "
+ "setting buffer's limit: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
}
}
輸出:
ShortBuffer before setting buffer's limit: [20, 30, 0, 0] Position: 2 Limit: 4 ShortBuffer after setting buffer's limit: [20, 30, 0, 0] Position: 1 Limit: 1
範例2:
// Java program to demonstrate
// limit() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// defining and allocating ShortBuffer
// using allocate() method
ShortBuffer shortBuffer
= ShortBuffer.allocate(5);
// put short value in ShortBuffer
// using put() method
shortBuffer.put((short)20);
shortBuffer.put((short)30);
shortBuffer.put((short)40);
// mark will be going to
// discarded by limit()
shortBuffer.mark();
// print the short buffer
System.out.println(
"ShortBuffer before "
+ "setting buffer's limit: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
// Limit the shortBuffer
// using limit() method
shortBuffer.limit(4);
// print the short buffer
System.out.println(
"\nShortBuffer before "
+ "setting buffer's limit: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
}
}
輸出:
ShortBuffer before setting buffer's limit: [20, 30, 40, 0, 0] Position: 3 Limit: 5 ShortBuffer before setting buffer's limit: [20, 30, 40, 0, 0] Position: 3 Limit: 4
參考:https://docs.oracle.com/javase/9/docs/api/java/nio/ShortBuffer.html#mark–
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注:本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 ShortBuffer limit() method in Java with Examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。