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src/java.base/share/classes/java/io/FilterOutputStream.java

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*** 1,7 **** /* ! * Copyright (c) 1994, 2017, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this --- 1,7 ---- /* ! * Copyright (c) 1994, 2019, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this
*** 65,74 **** --- 65,78 ---- * the field {@code this.out} for later use, or * <code>null</code> if this instance is to be * created without an underlying stream. */ public FilterOutputStream(OutputStream out) { + if (out == null) { + throw new NullPointerException(); + } + this.out = out; } /** * Writes the specified <code>byte</code> to this output stream.
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