[英]Java- Having trouble figuring out why there's an arrayOutOfBoundsException going on in my cache simulation
This method is supposed to: 该方法应该:
Poke through a text file filled with 32 rows of 10 hex strings. 在一个由32行的10个十六进制字符串填充的文本文件中进行戳戳。
Break them apart using a whitespace in between each as delimiter. 使用它们之间的空格作为分隔符将它们分开。
Store the hex strings in an array with 10 indices. 将十六进制字符串存储在具有10个索引的数组中。
Since I'm simulating memory I then load the array into a simulated Register class. 由于我正在模拟内存,因此我将数组加载到模拟的Register类中。
I've gotten it to this step, but I'm having trouble seeing why this arrayOutOfBounds exception is occurring for the arrayString[] array. 我已经到了这一步,但是我很难理解为什么arrayString []数组会发生arrayOutOfBounds异常。
public void setRegister(Register[] r) throws FileNotFoundException{ //pokes through the
//file and extracts hexes
Scanner s = new Scanner("/Users/adpitt/Documents/document.txt"); //macOS path
Register reggie = new Register(); //holding reg
while (s.hasNextLine()) {
String str = s.nextLine(); //slam a line into the string
for(int i = 0; i <= mainMemSize-1; i++){ //iterate through array of registers
for(int j = 0; j <= this.length-1; j++){
String arrayString[] = str.split("\\s+");//smash them to
//pieces, space = delimiter
reggie.reg[j] = arrayString[j];//THIS IS WHERE THE EXCEPTION OCCURS.
//I believe it's in arrayString[j],
//not sure why.
}//complete reggie!
r[i] = reggie;//load reggie into the register array to complete mm
}
}
s.close();
}
Why are you splitting the str
in the inner loop? 为什么在内部循环中拆分str
? The str
value is not changing anywhere inside those for loops. str
值在for循环内的任何位置均未更改。 Can you try moving it out of the for loops, and just after String str=s.nextLine();
您是否可以尝试将它移出for循环,并String str=s.nextLine();
在String str=s.nextLine();
Also what is this.length
? 还有this.length
是this.length
? what if this.length-1
is greater than 10 (assuming str.split returns 10 hex strings, as per your initial description)? 如果this.length-1
大于10怎么this.length-1
(假设str.split返回10个十六进制字符串,按照您的初始描述)?
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