listing16-13_savingdatainresourcefiles.txt

来自「着几乎所有智能机厂商都将有自己配套的App Store,甚至并非智能手机制造商的」· 文本 代码 · 共 42 行

// Listing 16-14. Loading Array Data from a Resource File



// Java source-code instructions:
InputStream is = getClass().getResourceAsStream( "/l1.data" );
DataInputStream in = new DataInputStream( is );
short arrayLength = in.readShort();
int[] values = new int[ arrayLength ];
for ( int i = 0; i < values.length; i++ ) {
values[ i ] = in.readInt();
}



// resulting Java byte-code instructions:
aload_0
invokevirtual #97 <Method Class Object.getClass()>
ldc1 #99 <String "/l1.data">
invokevirtual #105 <Method java.io.InputStream Class.getResourceAsStream(String)>
astore 7
new #107 <Class DataInputStream>
dup
aload 7
invokespecial #110 <Method void DataInputStream(java.io.InputStream)>
astore 8
aload 8
invokevirtual #114 <Method short DataInputStream.readShort()>
istore 9
iload 9
newarray int[]
astore 10
iconst_0
istore 11
goto 310
aload 10
iload 11
aload 8
invokevirtual #118 <Method int DataInputStream.readInt()>
iastore
iinc 11 1