本文整理了Java中java.util.Hashtable.computeIfPresent()方法的一些代码示例，展示了Hashtable.computeIfPresent()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。Hashtable.computeIfPresent()方法的具体详情如下：
包路径：java.util.Hashtable
类名称：Hashtable
方法名：computeIfPresent

Hashtable.computeIfPresent介绍

暂无

代码示例

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

@Override
public synchronized V computeIfPresent(K key, BiFunction<? super K,? super V,? extends V> remappingFunction) {
  // Must trigger add events if tracked or uow.
  if (hasTrackedPropertyChangeListener()) {
    if (get(key) != null) {
      V oldValue = get(key);
      V newValue = remappingFunction.apply(key, oldValue);
      if (newValue != null) {
        put(key, newValue);
        return newValue;
      }
      remove(key);
    }
    return null;
  }
  return getDelegate().computeIfPresent(key, remappingFunction);
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

@Override
public synchronized V computeIfPresent(K key, BiFunction<? super K,? super V,? extends V> remappingFunction) {
  // Must trigger add events if tracked or uow.
  if (hasTrackedPropertyChangeListener()) {
    if (get(key) != null) {
      V oldValue = get(key);
      V newValue = remappingFunction.apply(key, oldValue);
      if (newValue != null) {
        put(key, newValue);
        return newValue;
      }
      remove(key);
    }
    return null;
  }
  return getDelegate().computeIfPresent(key, remappingFunction);
}

代码示例来源：origin: octo-online/reactive-audit

@Test(expected = ReactiveAuditException.class)
public void computeIfPresent()
{
  ReactiveAudit.off.commit();
  Hashtable hash=new Hashtable();
  TestTools.strict.commit();
  hash.computeIfPresent(null,null);
}
@Test(expected = ReactiveAuditException.class)