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  5. java.util.OptionalLong#ifPresent ( )

java.util.OptionalLong#ifPresent ( )源码实例Demo

下面列出了java.util.OptionalLong#ifPresent ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： jdk8u_jdk   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码2 项目： jdk8u-jdk   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码3 项目： hottub   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码4 项目： jdk8u-dev-jdk   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码5 项目： TencentKona-8   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码6 项目： openjdk-jdk8u   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码7 项目： openjdk-jdk8u-backup   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码8 项目： jdk8u-jdk   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码9 项目： jdk8u_jdk   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码10 项目： dragonwell8_jdk   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码11 项目： TencentKona-8   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码12 项目： exonum-java-binding   文件： AbstractAccess.java 
private <T extends StorageIndex> T createIndex(Supplier<T> indexSupplier) {
  // Create an index
  T newIndex = indexSupplier.get();
  // Find the id of the index (possibly, newly created)
  OptionalLong indexId = findIndexId(newIndex.getAddress());
  // Register the open index in the pool, if it exists.
  // It does not "exist" until it is created with a Fork-based Access,
  // i.e., an empty index created with the Snapshot will not have an id.
  // We can, of course, cache them by address then, but that is not
  // required for correctness and may be done later as an optimization.
  indexId.ifPresent(id -> registerIndex(id, newIndex));
  return newIndex;
}
源代码13 项目： jdk8u60   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码14 项目： openjdk-jdk8u   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码15 项目： jdk8u-dev-jdk   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码16 项目： openjdk-jdk9   文件： BasicLong.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalLong.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());

    empty.ifPresent(v -> { fail(); });

    AtomicBoolean emptyCheck = new AtomicBoolean();
    empty.ifPresentOrElse(v -> fail(), () -> emptyCheck.set(true));
    assertTrue(emptyCheck.get());

    try {
        empty.ifPresentOrElse(v -> fail(), () -> { throw new ObscureException(); });
        fail();
    } catch (ObscureException expected) {
    } catch (AssertionError e) {
        throw e;
    } catch (Throwable t) {
        fail();
    }

    assertEquals(2, empty.orElse(2));
    assertEquals(2, empty.orElseGet(()-> 2));
}
源代码17 项目： openjdk-8   文件： BasicLong.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalLong empty = OptionalLong.empty();
    OptionalLong present = OptionalLong.of(1L);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalLong.of(0L)));
    assertTrue(present.equals(OptionalLong.of(1L)));
    assertFalse(present.equals(empty));
    assertTrue(Long.hashCode(1) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Long.toString(present.getAsLong()).toString()));
    assertEquals(1L, present.getAsLong());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1, present.orElse(2));
    assertEquals(1, present.orElseGet(null));
    assertEquals(1, present.orElseGet(()-> 2));
    assertEquals(1, present.orElseGet(()-> 3));
    assertEquals(1, present.<RuntimeException>orElseThrow(null));
    assertEquals(1, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码18 项目： component-runtime   文件： RecordServiceImpl.java 
@Override
public boolean forwardEntry(final Record source, final Record.Builder builder, final String sourceColumn,
        final Schema.Entry entry) {
    switch (entry.getType()) {
    case INT:
        final OptionalInt optionalInt = source.getOptionalInt(sourceColumn);
        optionalInt.ifPresent(v -> builder.withInt(entry, v));
        return optionalInt.isPresent();
    case LONG:
        final OptionalLong optionalLong = source.getOptionalLong(sourceColumn);
        optionalLong.ifPresent(v -> builder.withLong(entry, v));
        return optionalLong.isPresent();
    case FLOAT:
        final OptionalDouble optionalFloat = source.getOptionalFloat(sourceColumn);
        optionalFloat.ifPresent(v -> builder.withFloat(entry, (float) v));
        return optionalFloat.isPresent();
    case DOUBLE:
        final OptionalDouble optionalDouble = source.getOptionalDouble(sourceColumn);
        optionalDouble.ifPresent(v -> builder.withDouble(entry, v));
        return optionalDouble.isPresent();
    case BOOLEAN:
        final Optional<Boolean> optionalBoolean = source.getOptionalBoolean(sourceColumn);
        optionalBoolean.ifPresent(v -> builder.withBoolean(entry, v));
        return optionalBoolean.isPresent();
    case STRING:
        final Optional<String> optionalString = source.getOptionalString(sourceColumn);
        optionalString.ifPresent(v -> builder.withString(entry, v));
        return optionalString.isPresent();
    case DATETIME:
        final Optional<ZonedDateTime> optionalDateTime = source.getOptionalDateTime(sourceColumn);
        optionalDateTime.ifPresent(v -> builder.withDateTime(entry, v));
        return optionalDateTime.isPresent();
    case BYTES:
        final Optional<byte[]> optionalBytes = source.getOptionalBytes(sourceColumn);
        optionalBytes.ifPresent(v -> builder.withBytes(entry, v));
        return optionalBytes.isPresent();
    case RECORD:
        final Optional<Record> optionalRecord = source.getOptionalRecord(sourceColumn);
        optionalRecord.ifPresent(v -> builder.withRecord(entry, v));
        return optionalRecord.isPresent();
    case ARRAY:
        final Optional<Collection<Object>> optionalArray = source.getOptionalArray(Object.class, sourceColumn);
        optionalArray.ifPresent(v -> builder.withArray(entry, v));
        return optionalArray.isPresent();
    default:
        throw new IllegalStateException("Unsupported entry type: " + entry);
    }
}
源代码19 项目： component-runtime   文件： RecordJsonMapper.java 
@Override
public void onLong(final Schema.Entry entry, final OptionalLong optionalLong) {
    optionalLong.ifPresent(v -> builder.add(entry.getName(), v));
}
源代码20 项目： levelup-java-examples   文件： OptionalLongExample.java 
@Test
public void optional_long_ifPresent() {
	
	OptionalLong optionalLong = OptionalLong.of(56);

	optionalLong.ifPresent(p -> System.out.println(p));
	
	// or
	
	optionalLong.ifPresent(System.out::println);
}
 方法所在类
java.util.OptionalLong
 同类方法
empty ( )
of ( )
isPresent ( )
getAsLong ( )
orElseThrow ( )
ifPresent ( )
orElseGet ( )