Java by API/org.apache.commons.lang.builder/ToStringBuilder

new ToStringBuilder(Object object, ToStringStyle style)

   <source lang="java">

/*

One>>>BuilderTrial@1d1acd3[
 Name=Becker
 Age=35

] Two>>>BuilderTrial@743399[

 Name=Becker
 Age=35

] Three>>>BuilderTrial@e7b241[

 Name=Agassi
 Age=33

] one equals two? true one equals three? false One HashCode>>> -923455822 Two HashCode>>> -923455822 Three HashCode>>> -1433293806

*/

import org.apache.rumons.lang.builder.EqualsBuilder; import org.apache.rumons.lang.builder.HashCodeBuilder; import org.apache.rumons.lang.builder.ToStringBuilder; import org.apache.rumons.lang.builder.ToStringStyle; public class BuilderTrial {

 private String name;
 private int age;
 public BuilderTrial(String name, int age) {
   this.name = name;
   this.age = age;
 }
 public static void main(String[] args) {
   // Create new BuilderTrial instances
   BuilderTrial one = new BuilderTrial("Becker", 35);
   BuilderTrial two = new BuilderTrial("Becker", 35);
   BuilderTrial three = new BuilderTrial("Agassi", 33);
   // one and two hold the same data in different objects
   // three holds different data
   System.out.println("One>>>" + one);
   System.out.println("Two>>>" + two);
   System.out.println("Three>>>" + three);
   System.out.println("one equals two? " + one.equals(two));
   System.out.println("one equals three? " + one.equals(three));
   // As one and two hold the same data, the same hashcode is returned.
   System.out.println("One HashCode>>> " + one.hashCode());
   System.out.println("Two HashCode>>> " + two.hashCode());
   System.out.println("Three HashCode>>> " + three.hashCode());
 }
 public boolean equals(Object objCompared) {
   if (!(objCompared instanceof BuilderTrial)) {
     return false;
   }
   BuilderTrial rhs = (BuilderTrial) objCompared;
   return new EqualsBuilder().append(name, rhs.name).append(age, rhs.age).isEquals();
 }
 public String toString() {
   return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE).append("Name", name).append(
       "Age", age).toString();
 }
 public int hashCode() {
   return new HashCodeBuilder(15, 19).append(name).append(age).toHashCode();
 }

}

      </source>
   
  
 
  

ToStringBuilder: reflectionToString(Object object, ToStringStyle style)

   <source lang="java">

/* One>>>ReflectionBuilderTrial@1a1c887[

 name=Becker
 age=35

] Two>>>ReflectionBuilderTrial@a32b[

 name=Becker
 age=35

] Three>>>ReflectionBuilderTrial@1d8957f[

 name=Agassi
 age=33

] one equals two? true one equals three? false One HashCode>>> 462213092 Two HashCode>>> 462213092 Three HashCode>>> -530629296

• /

import org.apache.rumons.lang.builder.EqualsBuilder; import org.apache.rumons.lang.builder.HashCodeBuilder; import org.apache.rumons.lang.builder.ToStringBuilder; import org.apache.rumons.lang.builder.ToStringStyle; public class ReflectionBuilderTrial {

   private String name = null;
   private int age = 0;
   public ReflectionBuilderTrial(String name, int age) {
       this.name = name;
       this.age = age;
   }
   public static void main(String[] args) {
       ReflectionBuilderTrial one = new ReflectionBuilderTrial("Becker", 35);
       ReflectionBuilderTrial two = new ReflectionBuilderTrial("Becker", 35);
       ReflectionBuilderTrial three = new ReflectionBuilderTrial("Agassi", 33);
       System.out.println("One>>>" + one);
       System.out.println("Two>>>" + two);
       System.out.println("Three>>>" + three);
       System.out.println("one equals two? " + one.equals(two));
       System.out.println("one equals three? " + one.equals(three));
       System.out.println("One HashCode>>> " + one.hashCode());
       System.out.println("Two HashCode>>> " + two.hashCode());
       System.out.println("Three HashCode>>> " + three.hashCode());
   }
   public boolean equals(Object obj) {
       return EqualsBuilder.reflectionEquals(this, obj);
   }
   public String toString() {
       return ToStringBuilder.reflectionToString(this,
           ToStringStyle.MULTI_LINE_STYLE);
   }
   public int hashCode() {
       return HashCodeBuilder.reflectionHashCode(this);
   }

}

      </source>
   
  
 
  

ToStringStyle.MULTI_LINE_STYLE

   <source lang="java">

/* One>>>ReflectionBuilderTrial@1a1c887[

 name=Becker
 age=35

] Two>>>ReflectionBuilderTrial@a32b[

 name=Becker
 age=35

] Three>>>ReflectionBuilderTrial@1d8957f[

 name=Agassi
 age=33

] one equals two? true one equals three? false One HashCode>>> 462213092 Two HashCode>>> 462213092 Three HashCode>>> -530629296

• /

import org.apache.rumons.lang.builder.EqualsBuilder; import org.apache.rumons.lang.builder.HashCodeBuilder; import org.apache.rumons.lang.builder.ToStringBuilder; import org.apache.rumons.lang.builder.ToStringStyle; public class ReflectionBuilderTrial {

   private String name = null;
   private int age = 0;
   public ReflectionBuilderTrial(String name, int age) {
       this.name = name;
       this.age = age;
   }
   public static void main(String[] args) {
       ReflectionBuilderTrial one = new ReflectionBuilderTrial("Becker", 35);
       ReflectionBuilderTrial two = new ReflectionBuilderTrial("Becker", 35);
       ReflectionBuilderTrial three = new ReflectionBuilderTrial("Agassi", 33);
       System.out.println("One>>>" + one);
       System.out.println("Two>>>" + two);
       System.out.println("Three>>>" + three);
       System.out.println("one equals two? " + one.equals(two));
       System.out.println("one equals three? " + one.equals(three));
       System.out.println("One HashCode>>> " + one.hashCode());
       System.out.println("Two HashCode>>> " + two.hashCode());
       System.out.println("Three HashCode>>> " + three.hashCode());
   }
   public boolean equals(Object obj) {
       return EqualsBuilder.reflectionEquals(this, obj);
   }
   public String toString() {
       return ToStringBuilder.reflectionToString(this,
           ToStringStyle.MULTI_LINE_STYLE);
   }
   public int hashCode() {
       return HashCodeBuilder.reflectionHashCode(this);
   }

}

      </source>