com.google.common.base.Converter.convert()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中com.google.common.base.Converter.convert()方法的一些代码示例，展示了Converter.convert()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。Converter.convert()方法的具体详情如下：
包路径：com.google.common.base.Converter
类名称：Converter
方法名：convert

Converter.convert介绍

[英]Returns a representation of a as an instance of type B.
[中]将a的表示形式作为类型B的实例返回。

代码示例

代码示例来源：origin: google/guava

/**
 * @deprecated Provided to satisfy the {@code Function} interface; use {@link #convert} instead.
 */
@Deprecated
@Override
@CanIgnoreReturnValue
public final @Nullable B apply(@Nullable A a) {
 return convert(a);
}

代码示例来源：origin: google/guava

public void testStringConverter_convert() {
 Converter<String, Long> converter = Longs.stringConverter();
 assertEquals((Long) 1L, converter.convert("1"));
 assertEquals((Long) 0L, converter.convert("0"));
 assertEquals((Long) (-1L), converter.convert("-1"));
 assertEquals((Long) 255L, converter.convert("0xff"));
 assertEquals((Long) 255L, converter.convert("0xFF"));
 assertEquals((Long) (-255L), converter.convert("-0xFF"));
 assertEquals((Long) 255L, converter.convert("#0000FF"));
 assertEquals((Long) 438L, converter.convert("0666"));
}

代码示例来源：origin: google/guava

public void testStringConverter_convert() {
 Converter<String, Short> converter = Shorts.stringConverter();
 assertEquals((Short) (short) 1, converter.convert("1"));
 assertEquals((Short) (short) 0, converter.convert("0"));
 assertEquals((Short) (short) (-1), converter.convert("-1"));
 assertEquals((Short) (short) 255, converter.convert("0xff"));
 assertEquals((Short) (short) 255, converter.convert("0xFF"));
 assertEquals((Short) (short) (-255), converter.convert("-0xFF"));
 assertEquals((Short) (short) 255, converter.convert("#0000FF"));
 assertEquals((Short) (short) 438, converter.convert("0666"));
}

代码示例来源：origin: google/guava

public void testAsConverter_withNullMapping() throws Exception {
 BiMap<String, Integer> biMap = HashBiMap.create();
 biMap.put("one", 1);
 biMap.put("two", 2);
 biMap.put("three", null);
 try {
  Maps.asConverter(biMap).convert("three");
  fail();
 } catch (IllegalArgumentException expected) {
 }
}

代码示例来源：origin: google/guava

public void testStringConverter_convert() {
 Converter<String, TestEnum> converter = Enums.stringConverter(TestEnum.class);
 assertEquals(TestEnum.CHEETO, converter.convert("CHEETO"));
 assertEquals(TestEnum.HONDA, converter.convert("HONDA"));
 assertEquals(TestEnum.POODLE, converter.convert("POODLE"));
 assertNull(converter.convert(null));
 assertNull(converter.reverse().convert(null));
}

代码示例来源：origin: google/guava

void check() {
  runTester();
  @SuppressWarnings("unchecked") // We are checking it anyway
  Converter<String, Integer> defaultConverter =
    (Converter<String, Integer>) getDefaultParameterValue(0);
  assertEquals(Integer.valueOf(0), defaultConverter.convert("anything"));
  assertEquals("", defaultConverter.reverse().convert(123));
  assertNull(defaultConverter.convert(null));
  assertNull(defaultConverter.reverse().convert(null));
 }
}

代码示例来源：origin: google/guava

public void testNullIsNotPassedThrough() {
 Converter<String, String> nullsAreHandled = sillyConverter(true);
 assertEquals("forward", nullsAreHandled.convert("foo"));
 assertEquals(null, nullsAreHandled.convert(null));
 assertEquals("backward", nullsAreHandled.reverse().convert("foo"));
 assertEquals(null, nullsAreHandled.reverse().convert(null));
}

代码示例来源：origin: google/guava

public void testStringConverter_convertError() {
 Converter<String, TestEnum> converter = Enums.stringConverter(TestEnum.class);
 try {
  converter.convert("xxx");
  fail();
 } catch (IllegalArgumentException expected) {
 }
}

代码示例来源：origin: google/guava

public void testStringConverter_convertError() {
 try {
  Floats.stringConverter().convert("notanumber");
  fail();
 } catch (NumberFormatException expected) {
 }
}

代码示例来源：origin: google/guava

public void testStringConverter_convertError() {
 try {
  Ints.stringConverter().convert("notanumber");
  fail();
 } catch (NumberFormatException expected) {
 }
}

代码示例来源：origin: google/guava

public void testStringConverter_nullConversions() {
 Converter<String, TestEnum> converter = Enums.stringConverter(TestEnum.class);
 assertNull(converter.convert(null));
 assertNull(converter.reverse().convert(null));
}

代码示例来源：origin: google/guava

public void testStringConverter_convertError() {
 try {
  Doubles.stringConverter().convert("notanumber");
  fail();
 } catch (NumberFormatException expected) {
 }
}

代码示例来源：origin: google/guava

public void testStringConverter_reverse() {
 Converter<String, Integer> converter = Ints.stringConverter();
 assertEquals("1", converter.reverse().convert(1));
 assertEquals("0", converter.reverse().convert(0));
 assertEquals("-1", converter.reverse().convert(-1));
 assertEquals("255", converter.reverse().convert(0xff));
 assertEquals("255", converter.reverse().convert(0xFF));
 assertEquals("-255", converter.reverse().convert(-0xFF));
 assertEquals("438", converter.reverse().convert(0666));
}

代码示例来源：origin: google/guava

public void testStringConverter_reverse() {
 Converter<String, Long> converter = Longs.stringConverter();
 assertEquals("1", converter.reverse().convert(1L));
 assertEquals("0", converter.reverse().convert(0L));
 assertEquals("-1", converter.reverse().convert(-1L));
 assertEquals("255", converter.reverse().convert(0xffL));
 assertEquals("255", converter.reverse().convert(0xFFL));
 assertEquals("-255", converter.reverse().convert(-0xFFL));
 assertEquals("438", converter.reverse().convert(0666L));
}

代码示例来源：origin: google/guava

public void testStringConverter_reverse() {
 Converter<String, TestEnum> converter = Enums.stringConverter(TestEnum.class);
 assertEquals("CHEETO", converter.reverse().convert(TestEnum.CHEETO));
 assertEquals("HONDA", converter.reverse().convert(TestEnum.HONDA));
 assertEquals("POODLE", converter.reverse().convert(TestEnum.POODLE));
}

代码示例来源：origin: google/guava

@GwtIncompatible // Double.toString returns different value in GWT.
public void testStringConverter_reverse() {
 Converter<String, Double> converter = Doubles.stringConverter();
 assertEquals("1.0", converter.reverse().convert(1.0));
 assertEquals("0.0", converter.reverse().convert(0.0));
 assertEquals("-1.0", converter.reverse().convert(-1.0));
 assertEquals("1000000.0", converter.reverse().convert(1e6));
 assertEquals("1.0E-6", converter.reverse().convert(1e-6));
}

代码示例来源：origin: google/guava

public void testAsConverter_nullConversions() throws Exception {
 ImmutableBiMap<String, Integer> biMap =
   ImmutableBiMap.of(
     "one", 1,
     "two", 2);
 Converter<String, Integer> converter = Maps.asConverter(biMap);
 assertNull(converter.convert(null));
 assertNull(converter.reverse().convert(null));
}

代码示例来源：origin: google/guava

public void testConverterToBackward() {
 assertEquals("FOO_BAR", UPPER_UNDERSCORE.converterTo(UPPER_CAMEL).reverse().convert("FooBar"));
 assertEquals("FOO_BAR", UPPER_UNDERSCORE.converterTo(LOWER_CAMEL).reverse().convert("fooBar"));
 assertEquals("FooBar", UPPER_CAMEL.converterTo(UPPER_UNDERSCORE).reverse().convert("FOO_BAR"));
 assertEquals("fooBar", LOWER_CAMEL.converterTo(UPPER_UNDERSCORE).reverse().convert("FOO_BAR"));
}

代码示例来源：origin: google/guava

public void testConverter_nullConversions() {
 for (CaseFormat outer : CaseFormat.values()) {
  for (CaseFormat inner : CaseFormat.values()) {
   assertNull(outer.converterTo(inner).convert(null));
   assertNull(outer.converterTo(inner).reverse().convert(null));
  }
 }
}

代码示例来源：origin: google/guava

public void testIdentityConverter() {
 Converter<String, String> stringIdentityConverter = Converter.identity();
 assertSame(stringIdentityConverter, stringIdentityConverter.reverse());
 assertSame(STR_TO_LONG, stringIdentityConverter.andThen(STR_TO_LONG));
 assertSame(STR_VAL, stringIdentityConverter.convert(STR_VAL));
 assertSame(STR_VAL, stringIdentityConverter.reverse().convert(STR_VAL));
 assertEquals("Converter.identity()", stringIdentityConverter.toString());
 assertSame(Converter.identity(), Converter.identity());
}

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