/*
* Copyright ( c ) 1998 , 2020 , 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 .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
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*/
/* @test
@ bug 4074875 4063511 8235792
@ summary Make sure LineNumberReader . read ( char , int , int ) will increase
the linenumber correctly .
*/
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.StringReader;
import java.util.function .Consumer;
public class Read {
public static void main(String[] args) throws Exception {
testReadChars();
testEofs();
}
private static void testReadChars() throws Exception {
String s = "aaaa\nbbb\n" ;
char [] buf = new char [5 ];
int n = 0 ;
int line = 0 ;
LineNumberReader r = new LineNumberReader(new StringReader(s));
do {
n = r.read(buf, 0 , buf.length);
} while (n > 0 );
line = r.getLineNumber();
if (line != 2 )
throw new Exception("Failed test: Expected line number: 2, got "
+ line);
}
private static void testEofs() throws Exception {
String string = "first \n second" ;
Consumer<LineNumberReader> c = (LineNumberReader r) -> {
try {
while (r.read() != -1 )
continue ;
} catch (IOException e) {
throw new RuntimeException(e);
}
};
testEof(c, string, 2 );
c = (LineNumberReader r) -> {
try {
char [] buf = new char [128 ];
while (r.read(buf) != -1 )
continue ;
} catch (IOException e) {
throw new RuntimeException(e);
}
};
testEof(c, string, 2 );
c = (LineNumberReader r) -> {
try {
while (r.readLine() != null )
continue ;
} catch (IOException e) {
throw new RuntimeException(e);
}
};
testEof(c, string, 2 );
}
private static void testEof(Consumer<LineNumberReader> c, String s, int n)
throws Exception {
LineNumberReader r = new LineNumberReader(new StringReader(s));
c.accept(r);
int line;
if ((line = r.getLineNumber()) != n)
throw new Exception("Failed test: Expected line number: " + n +
" , got " + line);
}
}
Messung V0.5 in Prozent C=98 H=96 G=96
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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