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public class TestObject {
public String name;
@Override
public int hashCode() {
return 1;
}
public TestObject(String name) {
this.name = name;
}
@Override
public boolean equals(Object obj) {
return false;
}
}
public class test {
public static void main(String[] args) {
HashMap<TestObject,String> hashMap = new HashMap();
TestObject testObject1 = new TestObject("zhangsan");
TestObject testObject2 = new TestObject("lisi");
hashMap.put(testObject1,"abc");
hashMap.put(testObject2, "456");
System.out.println(hashMap.get(testObject1));
System.out.println(hashMap.get(testObject2));
System.out.println(hashMap.size());
}
}