Package org.springframework.kafka.support

Class JavaUtils

java.lang.Object

org.springframework.kafka.support.JavaUtils

public final class JavaUtils
extends Object

Chained utility methods to simplify some Java repetitive code. Obtain a reference to the singleton INSTANCE and then chain calls to the utility methods.

Since:

2.3

Author:

Gary Russell, Artem Bilan, Tomaz Fernandes

Field Summary

Fields

Modifier and Type	Field	Description
static final JavaUtils	INSTANCE	The singleton instance of this utility class.

Method Summary

Modifier and Type	Method	Description
<T1, T2> JavaUtils	acceptIfCondition(boolean condition, T1 t1, T2 t2, BiConsumer<T1,T2> consumer)	Invoke BiConsumer.accept(Object, Object) with the arguments if the condition is true.
<T> JavaUtils	acceptIfCondition(boolean condition, T value, Consumer<T> consumer)	Invoke Consumer.accept(Object) with the value if the condition is true.
JavaUtils	acceptIfHasText(String value, Consumer<String> consumer)	Invoke Consumer.accept(Object) with the value if it is not null or empty.
<T> JavaUtils	acceptIfHasText(T t1, String value, BiConsumer<T,String> consumer)	Invoke BiConsumer.accept(Object, Object) with the arguments if the value argument is not null or empty.
<T> JavaUtils	acceptIfInstanceOf(Class<T> type, Object value, Consumer<T> consumer)	Invoke Consumer.accept(Object) with the cast value if the object is an instance of the provided class.
<T> JavaUtils	acceptIfNotEmpty(List<T> value, Consumer<List<T>> consumer)	Invoke Consumer.accept(Object) with the value if it is not null or empty.
<T> JavaUtils	acceptIfNotEmpty(T[] value, Consumer<T[]> consumer)	Invoke Consumer.accept(Object) with the value if it is not null or empty.
<T1, T2> JavaUtils	acceptIfNotNull(T1 t1, T2 t2, BiConsumer<T1,T2> consumer)	Invoke BiConsumer.accept(Object, Object) with the arguments if the t2 argument is not null.
<T> JavaUtils	acceptIfNotNull(T value, Consumer<T> consumer)	Invoke Consumer.accept(Object) with the value if it is not null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final JavaUtils INSTANCE

The singleton instance of this utility class.

Method Details

acceptIfCondition

public <T> JavaUtils acceptIfCondition(boolean condition,
 T value,
 Consumer<T> consumer)

Invoke Consumer.accept(Object) with the value if the condition is true.

Type Parameters:

T - the value type.

Parameters:

condition - the condition.

value - the value.

consumer - the consumer.

Returns:

this.

acceptIfNotNull

public <T> JavaUtils acceptIfNotNull(@Nullable
 T value,
 Consumer<T> consumer)

Invoke Consumer.accept(Object) with the value if it is not null.

Type Parameters:

T - the value type.

Parameters:

value - the value.

consumer - the consumer.

Returns:

this.

acceptIfHasText

public JavaUtils acceptIfHasText(String value,
 Consumer<String> consumer)

Invoke Consumer.accept(Object) with the value if it is not null or empty.

Parameters:

value - the value.

consumer - the consumer.

Returns:

this.

acceptIfInstanceOf

public <T> JavaUtils acceptIfInstanceOf(Class<T> type,
 Object value,
 Consumer<T> consumer)

Invoke Consumer.accept(Object) with the cast value if the object is an instance of the provided class.

Type Parameters:

T - the type of the class to check and cast.

Parameters:

type - the type.

value - the value to be checked and cast.

consumer - the consumer.

Returns:

this.

Since:

2.9

acceptIfNotEmpty

public <T> JavaUtils acceptIfNotEmpty(List<T> value,
 Consumer<List<T>> consumer)

Invoke Consumer.accept(Object) with the value if it is not null or empty.

Type Parameters:

T - the value type.

Parameters:

value - the value.

consumer - the consumer.

Returns:

this.

acceptIfNotEmpty

public <T> JavaUtils acceptIfNotEmpty(T[] value,
 Consumer<T[]> consumer)

Invoke Consumer.accept(Object) with the value if it is not null or empty.

Type Parameters:

T - the value type.

Parameters:

value - the value.

consumer - the consumer.

Returns:

this.

acceptIfCondition

public <T1,
T2> JavaUtils acceptIfCondition(boolean condition,
 T1 t1,
 T2 t2,
 BiConsumer<T1,T2> consumer)

Invoke BiConsumer.accept(Object, Object) with the arguments if the condition is true.

Type Parameters:

T1 - the first argument type.

T2 - the second argument type.

Parameters:

condition - the condition.

t1 - the first consumer argument

t2 - the second consumer argument

consumer - the consumer.

Returns:

this.

acceptIfNotNull

public <T1,
T2> JavaUtils acceptIfNotNull(T1 t1,
 T2 t2,
 BiConsumer<T1,T2> consumer)

Invoke BiConsumer.accept(Object, Object) with the arguments if the t2 argument is not null.

Type Parameters:

T1 - the first argument type.

T2 - the second argument type.

Parameters:

t1 - the first argument

t2 - the second consumer argument

consumer - the consumer.

Returns:

this.

acceptIfHasText

public <T> JavaUtils acceptIfHasText(T t1,
 String value,
 BiConsumer<T,String> consumer)

Invoke BiConsumer.accept(Object, Object) with the arguments if the value argument is not null or empty.

Type Parameters:

T - the first argument type.

Parameters:

t1 - the first consumer argument.

value - the second consumer argument

consumer - the consumer.

Returns:

this.