範例

public class ClassA { private BufferedWriter writer; public void makeWriter (Writer w) { writer = new BufferedWriter(w); //執行某些動作... } }

解決方案

若要避免資源洩漏，請確定在每個 java.io.BufferedWriter 上都呼叫了 close()。 附註：這個規則適用於任何形式的 BufferedWriter 建構子。

public class ClassA { private BufferedWriter writer; public void makeWriter (Writer w) { writer = new BufferedWriter(w); //執行某些動作... try { writer.close(); } catch(IOException ioe) { //執行異常狀況處理 } } }