首页 > 应用开发 > Java > 拷贝Array元素到数组的优化 JDK 1.5
重点是怎么才能调用System.arraycopy方法。
public class Cell {
private int v;
public Cell(int v) {
this.v = v;
}
public String toString() {
return String.valueOf(v);
}
}
ArrayList
al.add(new Cell(10));
al.add(new Cell(11));
al.add(new Cell(12));
al.add(new Cell(13));
al.add(new Cell(14));
Cell[] cells = new Cell[al.size()];
cells = al.toArray(cells);
System.out.println("cells=" + Arrays.asList(cells));
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