java.lang.StringBuffer.capacity()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.lang.StringBuffer.capacity()方法的一些代码示例，展示了StringBuffer.capacity()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。StringBuffer.capacity()方法的具体详情如下：
包路径：java.lang.StringBuffer
类名称：StringBuffer
方法名：capacity

StringBuffer.capacity介绍

[英]Returns the current capacity of the String buffer. The capacity is the amount of storage available for newly inserted characters; beyond which an allocation will occur.
[中]返回字符串缓冲区的当前容量。容量是可用于新插入字符的存储量；超出此范围将进行分配。

代码示例

代码示例来源：origin: log4j/log4j

/**
   Produces a formatted string as specified by the conversion pattern.
 */
 public String format(LoggingEvent event) {
  // Reset working stringbuffer
  if(sbuf.capacity() > MAX_CAPACITY) {
   sbuf = new StringBuffer(BUF_SIZE);
  } else {
   sbuf.setLength(0);
  }

  PatternConverter c = head;

  while(c != null) {
   c.format(sbuf, event);
   c = c.next;
  }
  return sbuf.toString();
 }
}

代码示例来源：origin: log4j/log4j

public
String format(LoggingEvent event) {
 if(sbuf.capacity() > MAX_CAPACITY) {
  sbuf = new StringBuffer(BUF_SIZE);
 } else {

代码示例来源：origin: pentaho/pentaho-kettle

public String format( LoggingEvent event ) {
 if ( sbuf.capacity() > MAX_CAPACITY ) {
  sbuf = new StringBuffer( BUF_SIZE );
 } else {

代码示例来源：origin: log4j/log4j

if(buf.capacity() > UPPER_LIMIT) {
 buf = new StringBuffer(DEFAULT_SIZE);
} else {

代码示例来源：origin: pentaho/pentaho-kettle

public String format( LoggingEvent event ) {
 if ( sbuf.capacity() > MAX_CAPACITY ) {
  sbuf = new StringBuffer( BUF_SIZE );
 } else {

代码示例来源：origin: camunda/camunda-bpm-platform

/**
   Produces a formatted string as specified by the conversion pattern.
 */
 public String format(LoggingEvent event) {
  // Reset working stringbuffer
  if(sbuf.capacity() > MAX_CAPACITY) {
   sbuf = new StringBuffer(BUF_SIZE);
  } else {
   sbuf.setLength(0);
  }

  PatternConverter c = head;

  while(c != null) {
   c.format(sbuf, event);
   c = c.next;
  }
  return sbuf.toString();
 }
}

代码示例来源：origin: apache/log4j

/**
   Produces a formatted string as specified by the conversion pattern.
 */
 public String format(LoggingEvent event) {
  // Reset working stringbuffer
  if(sbuf.capacity() > MAX_CAPACITY) {
   sbuf = new StringBuffer(BUF_SIZE);
  } else {
   sbuf.setLength(0);
  }

  PatternConverter c = head;

  while(c != null) {
   c.format(sbuf, event);
   c = c.next;
  }
  return sbuf.toString();
 }
}

代码示例来源：origin: camunda/camunda-bpm-platform

public
String format(LoggingEvent event) {
 if(sbuf.capacity() > MAX_CAPACITY) {
  sbuf = new StringBuffer(BUF_SIZE);
 } else {

代码示例来源：origin: apache/log4j

public
String format(LoggingEvent event) {
 if(sbuf.capacity() > MAX_CAPACITY) {
  sbuf = new StringBuffer(BUF_SIZE);
 } else {

代码示例来源：origin: apache/log4j

if(buf.capacity() > UPPER_LIMIT) {
 buf = new StringBuffer(DEFAULT_SIZE);
} else {

代码示例来源：origin: org.clapper/javautil

/**
 * Return the current capacity of the buffer (i.e., the number of
 * characters left before truncation will occur).
 *
 * @return The capacity. A 0 means no more room is left, and all further
 *         inserted or appended characters will cause truncation.
 *
 * @see #length
 */
public int capacity()
{
  return buf.capacity();
}

代码示例来源：origin: stackoverflow.com

%pragma(java) modulecode = %{
 public static int foo(String in, StringBuffer out) {
  int sz[] = {out.capacity()};
  byte ret[] = new byte[out.capacity()];
  final int v = test.foo(in, ret, sz);
  // Or whatever your preferred semantics are: 
  out.replace(0, sz[0], new String(ret, 0, sz[0]));
  return v;
 }
%}

代码示例来源：origin: stackoverflow.com

class Demo2 
{
  public static void main(String[] args) 
  {
    StringBuffer s = new StringBuffer();
    System.out.println(s.capacity());
    s.append("sachin");
    System.out.println(s.capacity());
    s.append(" is a great batsman");
    System.out.println(s.capacity());
  }
}

代码示例来源：origin: stackoverflow.com

public class StringBufferTest {
  public static void main(String[] args) {
    StringBuffer buf = new StringBuffer('a');
    System.out.println(buf.capacity());
    System.out.println((int) 'a');
    StringBuffer buf2 = new StringBuffer('b');
    System.out.println(buf2.capacity());
    System.out.println((int) 'b');
  }
}

代码示例来源：origin: stackoverflow.com

StringBuffer buf3 = new StringBuffer("a");
System.out.println(buf3.capacity());

代码示例来源：origin: stackoverflow.com

// initial capacity (of the array behind the scenes) will be 16. 
StringBuffer buff1 = new StringBuffer("tuts point");
//  The above constructor increases the capacity by 16 + stringArgument.length = 16 + 10 = 26 ( hence the output)
System.out.println("Old Capacity of buff1 = " + buff1.capacity()); // 26 ->check

buff1.ensureCapacity(28); // here 28 is minimumcapacity.
// the above line of code calls expandCapacity() of AbstractStringBuilder which does this:
//`(value.length + 1) * 2` i.e, 26+1 * 2 = 54 . Hence the output. 

System.out.println("New Capacity of buff1 = " + buff1.capacity()); //54 --> check

代码示例来源：origin: com.alibaba.citrus.tool/antx-autoexpand

public String convert(E event) {
 if (buf.capacity() > MAX_CAPACITY) {
  buf = new StringBuffer(INITIAL_BUF_SIZE);
 } else {
  buf.setLength(0);
 }
 for (Converter<E> c = childConverter; c != null; c = c.next) {
  c.write(buf, event);
 }
 return buf.toString();
}

代码示例来源：origin: com.cloudbees.util/jnr-unixsocket-nodep

public ByteBuffer toNative(StringBuffer parameter, ToNativeContext context) {
  if (parameter == null) {
    return null;
  } else {
    ByteBuffer buf = ParameterFlags.isIn(parameterFlags)
        ? charset.encode(CharBuffer.wrap(parameter))
        : ByteBuffer.allocate(parameter.capacity() + 1);
    if ((ParameterFlags.isOut(parameterFlags) && buf.capacity() < parameter.capacity() + 1) || !buf.hasArray()) {
      byte[] array = new byte[parameter.capacity() + 1];
      buf.get(array, 0, buf.remaining());
      return ByteBuffer.wrap(array);
    } else {
      return buf;
    }
  }
}

代码示例来源：origin: com.facebook.presto.cassandra/cassandra-driver

public ByteBuffer toNative(StringBuffer parameter, ToNativeContext context) {
  if (parameter == null) {
    return null;
  } else {
    ByteBuffer buf = ParameterFlags.isIn(parameterFlags)
        ? charset.encode(CharBuffer.wrap(parameter))
        : ByteBuffer.allocate(parameter.capacity() + 1);
    if ((ParameterFlags.isOut(parameterFlags) && buf.capacity() < parameter.capacity() + 1) || !buf.hasArray()) {
      byte[] array = new byte[parameter.capacity() + 1];
      buf.get(array, 0, buf.remaining());
      return ByteBuffer.wrap(array);
    } else {
      return buf;
    }
  }
}

代码示例来源：origin: io.prestosql.cassandra/cassandra-driver

public ByteBuffer toNative(StringBuffer parameter, ToNativeContext context) {
  if (parameter == null) {
    return null;
  } else {
    ByteBuffer buf = ParameterFlags.isIn(parameterFlags)
        ? charset.encode(CharBuffer.wrap(parameter))
        : ByteBuffer.allocate(parameter.capacity() + 1);
    if ((ParameterFlags.isOut(parameterFlags) && buf.capacity() < parameter.capacity() + 1) || !buf.hasArray()) {
      byte[] array = new byte[parameter.capacity() + 1];
      buf.get(array, 0, buf.remaining());
      return ByteBuffer.wrap(array);
    } else {
      return buf;
    }
  }
}

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