Conditions

Type	🔵 Class
Package	io.github.mrtesz.teszcore.util
GitHub	Conditions.java

Description

Utility class for validating arguments, states, and values. Throws descriptive exceptions when conditions are not met, similar to Guava’s Preconditions.

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Methods

checkArgument

static void checkArgument(boolean argument) throws IllegalArgumentException;
static void checkArgument(boolean argument, String message) throws IllegalArgumentException;

Check a boolean and throw an exception if argument is false

Parameter	Type	Annotations	Description
argument	boolean	-	Argument
message	String	@Nullable	Message in the exception, if thrown

Throws: IllegalArgumentException when argument is false

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checkRange

static <T extends Number> T checkRange(T num, T min, T max) throws IllegalNumberRangeException;
static <T extends Number> T checkRange(T num, T min, T max, String message) throws IllegalNumberRangeException;

Check if a number is in a range and throw an exception if it’s not

Parameter	Type	Annotations	Description
num	T	-	Number to check
min	T	-	Range minimum
max	T	-	Range maximum
message	String	@Nullable	Message in the exception, if thrown

Returns: T - num

Throws: IllegalNumberRangeException when num is not in the provided range

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checkState

static void checkState(boolean state) throws IllegalStateException;
static void checkState(boolean state, String message) throws IllegalStateException;

Check a boolean and throw an exception if it is false

Parameter	Type	Annotations	Description
state	boolean	-	State
message	String	@Nullable	Message in the exception, if thrown

Throws: IllegalStateException when state is false

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checkNonNull

static <T> T checkNonNull(T obj) throws NullPointerException;
static <T> T checkNonNull(T obj, String message) throws NullPointerException;

Check if an object not null

Parameter	Type	Annotations	Description
obj	boolean	-	Object
message	String	@Nullable	Message in the exception, if thrown

Returns: T - obj

Throws: NullPointerException when obj is null

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checkNull

static <T> void checkNull(T obj) throws NotNullException;
static <T> void checkNull(T obj, String message) throws NotNullException;

Check if an object is not null

Parameter	Type	Annotations	Description
obj	boolean	-	Object
message	String	@Nullable	Message in the exception, if thrown

Throws: NotNullException when obj is not null

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