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public class Demo1<T> {
private T value;
public Demo1(T value) {
this.value= value;
}
public void setFirst(T value){this.value= value;}
public T getFirst(){return value;}
}
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String string = "yangsq";
Demo1<String> demo1 = new Demo1<String>(string);
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public class Demo2<T,U> {
private T tValue;
private U uValue;
public Demo2(T tValue, U uValue) {
this.tValue= tValue;
this.uValue = uValue;
}
... ...
}
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public class Demo3 {
public <T> T getMiddle(T[] array) {
return array[array.length/2];
}
}
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Demo3 demo3 = new Demo3();
String[] strings = {"abc", "def", "wxy"};
String middle = demo3.<String>getMiddle(strings);
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