Java by API/org.apache.commons.lang.builder/EqualsBuilder — различия между версиями

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м (1 версия)
 
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Текущая версия на 14:23, 31 мая 2010

EqualsBuilder: reflectionEquals(Object lhs, Object rhs)

/*
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);
    }
}