Java 支持浅克隆的类
支持浅克隆的类
实例源码：
源代码：
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public class Main {3
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public static void main(String[] args) {5
/*6
时代Java公众号 - N o w J a v a . c o m 提 供7
*/8
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ShallowClone sc = new ShallowClone(100.00);10
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ShallowClone scClone = (ShallowClone) sc.clone();12
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// Print the value in original and clone15
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System.out.println("Original:" + sc.getValue());17
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System.out.println("Clone :" + scClone.getValue());19
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// Change the value in original and it will change the value22
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// for clone too because we have done shallow cloning24
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sc.setValue(200.00);26
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// Print the value in original and clone29
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System.out.println("Original:" + sc.getValue());31
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System.out.println("Clone :" + scClone.getValue());33
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}35
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}37
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class MyClass implements Cloneable {/*来 自 NowJava.com - 时代Java*/40
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private double value;42
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public MyClass(double value) {45
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this.value = value;47
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}49
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public void setValue(double value) {52
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this.value = value;54
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}56
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public double getValue() {59
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return this.value;61
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}63
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public Object clone() {66
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MyClass copy = null;68
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try {70
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// Call the clone() method of the Object class72
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copy = (MyClass) super.clone();74
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} catch (CloneNotSupportedException e) {76
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// If anything goes wrong during cloning, print the error details78
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e.printStackTrace();80
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}82
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return copy;84
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}86
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}88
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class ShallowClone implements Cloneable {91
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private MyClass holder = new MyClass(0.0);93
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public ShallowClone(double value) {96
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this.holder.setValue(value);98
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}100
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public void setValue(double value) {103
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this.holder.setValue(value);105
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}107
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