I’ve been PHP developer. PHP has powerful debug method like print_r, var_dump and debug lib like xdebug.

But, as JAVA developer I’m troubled with absence of debug method.

Although inconvenient, you can use a toString() method like print_r in JAVA. It is Pojomatic library.

If you use maven, add dependency to pom.xml.

<dependency>
    <groupId>org.pojomatic</groupId>
    <artifactId>pojomatic</artifactId>
    <version>1.0</version>
</dependency>

Then, import Pojomatic and add @AutoProperty annotation to class you want to read like PostVo.java.

import org.pojomatic.Pojomatic;
import org.pojomatic.annotations.AutoProperty;

@AutoProperty
public class PostVO { ... }

And, override toString method like this:

@Override
public String toString() {
    return Pojomatic.toString (this);
}

You can override hashCode() and equals(Object o).

@Override
public boolean equals(Object o) {
    return Pojomatic.equals (this, o);
}

@Override
public int hashCode() {
    return Pojomatic.hashCode (this);
}

You can use below code, and see below result.

System.out.println(new Person("John", "Doe", 32).toString());

// result: Person{firstName: {John}, lastName: {Doe}, age: {32}}

Of course, you can use code like logger.debug("{}", vo).

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