[ JDK VERSION : 1.6.0_02 ]

Override equals method led to != String comparison

Steps:
1: create Ex:Test class
public class Test {
 private String key;

}

2:right click and invoke inset code--> equals() and hashcode()

3:select key variable to both equal and hashcode

4:click Generate and up with

public class Test {
 private String key;

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Test other = (Test) obj;
        if (this.key != other.key && (this.key == null ||
!this.key.equals(other.key))) {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode() {
        int hash = 5;
        hash = 89 * hash + (this.key != null ? this.key.hashCode() :
0);
        return hash;
    }

 
}