lombok

public class  {

  private String username;
  private int age;

}

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# After Decompile
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public class  {
  private java.lang.String username;
  private int age;

  public (java.lang.String roleName, int priviledge) {  }
}

@NoArgsConstructor
public class  {

  private String username;
  private int age;

}

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# After Decompile
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public class  {
  private java.lang.String username;
  private int age;

  public User() {  }
}

@Getter
@Setter
public class User2 {

  private String username;

  private int age;

}

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# After Decompile
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public class User2 {
  private java.lang.String username;
  private int age;

  public User2() {  }

  public java.lang.String getUsername() {  }

  public int getAge() {  }

  public void setUsername(java.lang.String username) {  }

  public void setAge(int age) {  }
}

@Data
public class User3 {

  @NotNull
  private String username;

  private int age;

}

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# After Decompile
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public class User3 {
  @javax.validation.constraints.NotNull
  private java.lang.String username;
  private int age;

  public User3() {  }

  public java.lang.String getUsername() {  }

  public int getAge() {  }

  public void setUsername(java.lang.String username) { /* compiled code */ }

  public void setAge(int age) { /* compiled code */ }

  public boolean equals(java.lang.Object o) { /* compiled code */ }

  protected boolean canEqual(java.lang.Object other) { /* compiled code */ }

  public int hashCode() { /* compiled code */ }

  public java.lang.String toString() { /* compiled code */ }
}

@Slf4j
public class LombokSlf4j {

  public static void main(String[] args) {
    log.info("info");
    log.warn("warn");
    System.out.print(log.getName());
    log.error("error");
  }
}

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# After Decompile
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package com.example.lombokdemo.model;

public class LombokSlf4j {
  private static final org.slf4j.Logger log;

  public LombokSlf4j() { /* compiled code */ }

  public static void main(java.lang.String[] args) { /* compiled code */ }
}

@Builder
public class LombokBuilder {
  private String Country;
  private String City;
  private String Street;
  private int doorNumber;
  private int zipcode;
  private String receiver;
}

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# After Decompile
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public class LombokBuilder {
  private java.lang.String Country;
  private java.lang.String City;
  private java.lang.String Street;
  private int doorNumber;
  private int zipcode;
  private java.lang.String receiver;

  LombokBuilder(java.lang.String Country, java.lang.String City, java.lang.String Street, int doorNumber, int zipcode, java.lang.String receiver) { /* compiled code */ }

  public static com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder builder() { /* compiled code */ }

  public static class LombokBuilderBuilder {
    private java.lang.String Country;
    private java.lang.String City;
    private java.lang.String Street;
    private int doorNumber;
    private int zipcode;
    private java.lang.String receiver;

    LombokBuilderBuilder() { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder Country(java.lang.String Country) { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder City(java.lang.String City) { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder Street(java.lang.String Street) { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder doorNumber(int doorNumber) { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder zipcode(int zipcode) { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder.LombokBuilderBuilder receiver(java.lang.String receiver) { /* compiled code */ }

    public com.example.lombokdemo.model.LombokBuilder build() { /* compiled code */ }

    public java.lang.String toString() { /* compiled code */ }
  }
}