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  5. java.util.OptionalDouble#ifPresent ( )

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

下面列出了java.util.OptionalDouble#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： TencentKona-8   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码2 项目： openjdk-jdk8u   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码3 项目： jdk8u_jdk   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码4 项目： openjdk-jdk8u-backup   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码5 项目： jdk8u-jdk   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码6 项目： openjdk-8-source   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码7 项目： jdk8u-jdk   文件： BasicDouble.java 
@Test(groups = "unit")
public void testEmpty() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // empty
    assertTrue(empty.equals(empty));
    assertTrue(empty.equals(OptionalDouble.empty()));
    assertTrue(!empty.equals(present));
    assertTrue(0 == empty.hashCode());
    assertTrue(!empty.toString().isEmpty());
    assertTrue(!empty.isPresent());
    empty.ifPresent(v -> { fail(); });
    assertEquals(2.0, empty.orElse(2.0));
    assertEquals(2.0, empty.orElseGet(()-> 2.0));
}
源代码8 项目： jdk8u-jdk   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码9 项目： dragonwell8_jdk   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码10 项目： TencentKona-8   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码11 项目： openjdk-8-source   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码12 项目： jdk8u60   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码13 项目： openjdk-jdk8u   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码14 项目： jdk8u_jdk   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码15 项目： jdk8u-dev-jdk   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码16 项目： jdk8u-jdk   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码17 项目： aws-sdk-java-v2   文件： OptionalDoubleAttributeConverter.java 
@Override
public OptionalDouble transformTo(AttributeValue input) {
    OptionalDouble result;
    if (input.n() != null) {
        result = EnhancedAttributeValue.fromNumber(input.n()).convert(VISITOR);
    } else {
        result = EnhancedAttributeValue.fromAttributeValue(input).convert(VISITOR);
    }
    result.ifPresent(ConverterUtils::validateDouble);
    return result;
}
源代码18 项目： hottub   文件： BasicDouble.java 
@Test(groups = "unit")
    public void testPresent() {
    OptionalDouble empty = OptionalDouble.empty();
    OptionalDouble present = OptionalDouble.of(1.0);

    // present
    assertTrue(present.equals(present));
    assertFalse(present.equals(OptionalDouble.of(0.0)));
    assertTrue(present.equals(OptionalDouble.of(1.0)));
    assertTrue(!present.equals(empty));
    assertTrue(Double.hashCode(1.0) == present.hashCode());
    assertFalse(present.toString().isEmpty());
    assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
    assertEquals(1.0, present.getAsDouble());
    try {
        present.ifPresent(v -> { throw new ObscureException(); });
        fail();
    } catch(ObscureException expected) {

    }
    assertEquals(1.0, present.orElse(2.0));
    assertEquals(1.0, present.orElseGet(null));
    assertEquals(1.0, present.orElseGet(()-> 2.0));
    assertEquals(1.0, present.orElseGet(()-> 3.0));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(null));
    assertEquals(1.0, present.<RuntimeException>orElseThrow(ObscureException::new));
}
源代码19 项目： component-runtime   文件： RecordJsonMapper.java 
@Override
public void onDouble(final Schema.Entry entry, final OptionalDouble optionalDouble) {
    optionalDouble.ifPresent(v -> builder.add(entry.getName(), v));
}
源代码20 项目： levelup-java-examples   文件： OptionalDoubleExample.java 
@Test
public void optional_double_ifPresent() {
	
	OptionalDouble optionalDouble = OptionalDouble.of(56);

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