io.neow3j.utils.ClassUtils Maven / Gradle / Ivy
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package io.neow3j.utils;
import java.io.InputStream;
public class ClassUtils {
public static String getFullyQualifiedNameForInternalName(String internalName) {
if (internalName == null) {
return null;
}
return internalName.replace("/", ".");
}
public static String getClassName(String fqClassName) {
if (fqClassName == null) {
return null;
}
int firstChar = fqClassName.lastIndexOf('.') + 1;
if (firstChar > 0) {
fqClassName = fqClassName.substring(firstChar);
}
return fqClassName;
}
/**
* Gets the class name for the given internal name.
*
* An internal name is similar to a fully qualified name but the '.' are replaced by '/'. The returned name is
* only the last part of the fully qualified name. E.g. {@code io.neow3j.core.Transaction} becomes {@code
* Transaction}.
*
* @param internalName the internal name to get the simple class name for.
* @return the class name.
*/
public static String getClassNameForInternalName(String internalName) {
return getClassName(getFullyQualifiedNameForInternalName(internalName));
}
/**
* Gets the input stream of the class with the given name. Uses the given classLoader when looking for the class
* file.
*
* @param fullyQualifiedClassName the fully qualified name of the class to load.
* @param classLoader the class loader to use.
* @return the input stream of the found class file.
*/
public static InputStream getClassInputStreamForClassName(String fullyQualifiedClassName, ClassLoader classLoader) {
return classLoader.getResourceAsStream(fullyQualifiedClassName.replace('.', '/') + ".class");
}
}