Example usage for java.lang.reflect Method getReturnType

Introduction

In this page you can find the example usage for java.lang.reflect Method getReturnType.

Prototype

public Class<?> getReturnType()

Source Link

Document

Returns a Class object that represents the formal return type of the method represented by this Method object.

Usage

From source file:Main.java

public static Method findMethodByNameAndReturnType(Class<?> targetObject, String methodName, String returnType,
        Class<?>... params) {
    for (Method method : targetObject.getDeclaredMethods()) {
        if (method.getReturnType().getName().equals(returnType) && method.getName().equals(methodName)) {
            Class[] parameterTypes = method.getParameterTypes();
            if (params.length != parameterTypes.length) {
                continue;
            }//from   w w  w .  ja  v  a 2  s  .co  m
            for (int i = 0; i < params.length; i++) {
                if (params[i] != parameterTypes[i]) {
                    break;
                }
            }
            method.setAccessible(true);
            return method;
        }
    }
    throw new NoSuchMethodError();
}

From source file:Utils.java

public static boolean isJavaBeanCompliantSetter(Method method) {
    if (method == null)
        return false;

    if (method.getReturnType() != Void.TYPE)
        return false;

    if (!method.getName().startsWith("set"))
        return false;

    if (method.getParameterTypes().length != 1)
        return false;

    return true;/*from w w w . j  a  v  a2 s .  c  o  m*/
}

From source file:Main.java

public static String parseReturnType(Method method) {
    String returnType = "";
    Class<?> returnClass = method.getReturnType();
    returnType = parseClassType(returnClass);
    return returnType;
}

From source file:springfox.documentation.schema.property.bean.Accessors.java

private static boolean notAVoidMethod(Method method) {
    return !method.getReturnType().equals(void.class);
}

From source file:ShowClass.java

public static void printMethodOrConstructor(Member member) {
    Class returntype = null, parameters[], exceptions[];
    if (member instanceof Method) {
        Method m = (Method) member;
        returntype = m.getReturnType();
        parameters = m.getParameterTypes();
        exceptions = m.getExceptionTypes();
        System.out.print(//from w  w w.  j  a v  a 2s. c om
                "  " + modifiers(member.getModifiers()) + typeName(returntype) + " " + member.getName() + "(");
    } else {
        Constructor c = (Constructor) member;
        parameters = c.getParameterTypes();
        exceptions = c.getExceptionTypes();
        System.out.print("  " + modifiers(member.getModifiers()) + typeName(c.getDeclaringClass()) + "(");
    }

    for (int i = 0; i < parameters.length; i++) {
        if (i > 0)
            System.out.print(", ");
        System.out.print(typeName(parameters[i]));
    }
    System.out.print(")");
    if (exceptions.length > 0)
        System.out.print(" throws ");
    for (int i = 0; i < exceptions.length; i++) {
        if (i > 0)
            System.out.print(", ");
        System.out.print(typeName(exceptions[i]));
    }
    System.out.println(";");
}

From source file:Main.java

public static void print_method_or_constructor(Member member) {
    Class returntype = null, parameters[], exceptions[];
    if (member instanceof Method) {
        Method m = (Method) member;
        returntype = m.getReturnType();
        parameters = m.getParameterTypes();
        exceptions = m.getExceptionTypes();
        System.out.print(/* ww  w .  j  ava 2  s.  c  om*/
                "  " + modifiers(member.getModifiers()) + typename(returntype) + " " + member.getName() + "(");
    } else {
        Constructor c = (Constructor) member;
        parameters = c.getParameterTypes();
        exceptions = c.getExceptionTypes();
        System.out.print("  " + modifiers(member.getModifiers()) + typename(c.getDeclaringClass()) + "(");
    }
    for (int i = 0; i < parameters.length; i++) {
        if (i > 0)
            System.out.print(", ");
        System.out.print(typename(parameters[i]));
    }
    System.out.print(")");
    if (exceptions.length > 0)
        System.out.print(" throws ");
    for (int i = 0; i < exceptions.length; i++) {
        if (i > 0)
            System.out.print(", ");
        System.out.print(typename(exceptions[i]));
    }
    System.out.println(";");
}

From source file:ReflectionTest.java

/**
 * Prints all methods of a class/*from  www  . j  ava 2 s  .  c  om*/
 * @param cl a class
 */
public static void printMethods(Class cl) {
    Method[] methods = cl.getDeclaredMethods();

    for (Method m : methods) {
        Class retType = m.getReturnType();
        String name = m.getName();

        System.out.print("   ");
        // print modifiers, return type and method name
        String modifiers = Modifier.toString(m.getModifiers());
        if (modifiers.length() > 0)
            System.out.print(modifiers + " ");
        System.out.print(retType.getName() + " " + name + "(");

        // print parameter types
        Class[] paramTypes = m.getParameterTypes();
        for (int j = 0; j < paramTypes.length; j++) {
            if (j > 0)
                System.out.print(", ");
            System.out.print(paramTypes[j].getName());
        }
        System.out.println(");");
    }
}

From source file:com.codeabovelab.dm.common.utils.PojoBeanUtils.java

/**
 * Copy properties into lombok-style builders (it builder do not follow java bean convention)
 * @param src source bean object/*from  w  w  w  .  j  av  a  2s . c om*/
 * @param dst destination builder object
 * @return dst object
 */
public static <T> T copyToBuilder(Object src, T dst) {
    PojoClass srcpojo = new PojoClass(src.getClass());
    Class<?> builderClass = dst.getClass();
    Method[] methods = builderClass.getMethods();
    for (Method method : methods) {
        boolean isBuilderSetter = method.getReturnType().equals(builderClass)
                && method.getParameterCount() == 1;
        if (!isBuilderSetter) {
            continue;
        }
        String propertyName = method.getName();
        Property property = srcpojo.getProperties().get(propertyName);
        if (property == null) {
            continue;
        }
        Object val = property.get(src);
        if (val == null) {
            continue;
        }
        try {
            method.invoke(dst, val);
        } catch (Exception e) {
            //nothing
        }
    }
    return dst;
}

From source file:Main.java

public static Class<?> getXMLBeansValueType(Class<?> wrapperType) {
    Class<?> result = wrapperType;
    for (Method method : wrapperType.getMethods()) {
        if (method.getName().startsWith("addNew")) {
            result = method.getReturnType();
            break;
        }//from  ww w .  ja v  a 2  s .  co  m
    }
    return result;
}

From source file:ShowClass.java

/**
 * Print the modifiers, return type, name, parameter types and exception type
 * of a method or constructor. Note the use of the Member interface to allow
 * this method to work with both Method and Constructor objects
 *///  ww w. ja v a  2 s.c  om
public static void print_method_or_constructor(Member member) {
    Class returntype = null, parameters[], exceptions[];
    if (member instanceof Method) {
        Method m = (Method) member;
        returntype = m.getReturnType();
        parameters = m.getParameterTypes();
        exceptions = m.getExceptionTypes();
        System.out.print(
                "  " + modifiers(member.getModifiers()) + typename(returntype) + " " + member.getName() + "(");
    } else {
        Constructor c = (Constructor) member;
        parameters = c.getParameterTypes();
        exceptions = c.getExceptionTypes();
        System.out.print("  " + modifiers(member.getModifiers()) + typename(c.getDeclaringClass()) + "(");
    }

    for (int i = 0; i < parameters.length; i++) {
        if (i > 0)
            System.out.print(", ");
        System.out.print(typename(parameters[i]));
    }
    System.out.print(")");
    if (exceptions.length > 0)
        System.out.print(" throws ");
    for (int i = 0; i < exceptions.length; i++) {
        if (i > 0)
            System.out.print(", ");
        System.out.print(typename(exceptions[i]));
    }
    System.out.println(";");
}