public class TestBean { public String id1; public String id2; public TestBean(String id1, String id2) { super(); this.id1 = id1; this.id2 = id2; } public String getId1() { return id1; } public void setId1(String id1) { this.id1 = id1; } public String getId2() { return id2; } public void setId2(String id2) { this.id2 = id2; } @Override public int hashCode() { final int prime = 31; int result = 1; r