Using:

Product Version: NetBeans IDE 6.0 M10 (build 200706281431)
Java: 1.5.0_12; Java HotSpot(TM) Client VM 1.5.0_12-b04
System: Linux version 2.6.9-55.0.6.ELsmp running on i386; UTF-8; en_US (nb) 

Observed Behavior:

Summary:
Using the "Generate Code..." feature to create equals and hashCode, the generated hashCode will not compile.

What the code generates:

To generate a hashCode for the following fields: 

    private String name;
    private Date date;

results in the following:

    public int hashCode() {
        int hash = 5;
        hash = 59 * hash + this.name != null ? this.name.hashCode() : 0;
        hash = 59 * hash + this.date != null ? this.date.hashCode() : 0;
        return hash;
    }

which causes the following compile-time error:

Compiling 1 source file to /home/lorin/NetBeans Projects/IBS Portal Packages/build/classes
Test.java:42: operator + cannot be applied to int,java.util.Date
        hash = 59 * hash + this.date != null ? this.date.hashCode() : 0;
1 error

The code should read:

    public int hashCode() {
        int hash = 5;
        hash = 59 * hash + (this.name != null ? this.name.hashCode() : 0);
        hash = 59 * hash + (this.date != null ? this.date.hashCode() : 0);
        return hash;
    }

which properly compiles.