如何更新一行而不是多行？

Question

簡單，我只是想要一個代碼（而不是在控制檯中打印出各行文本）只更新一行文本和新值，或者「替換」它。

目前代碼：

//this code was expanded into a more configurable version 
//original author is zengr 

public final class EnumRandValue { 

public static final void main(String... aArgs){ 
int min = 12; 
int max = 157; 
int ints = 1000; 
//how many numbers to generate? 

int enumeration = 1; 
int maximumints = 1000; 
//advanced users only! 

log("Generating " + ints + " random integers in range of " + (min-1) + " and " + (max-1) + "."); 

//note a single Random object is reused here 
if(min < max || min != max) { 
Random randomGenerator = new Random(); 
for (int idx = 1; idx <= ints; ++idx){ 
    int randomInt = randomGenerator.nextInt(max); 
    log("E" + enumeration++ + ": " + randomInt); 
    if(enumeration >= maximumints) { 
     String breakmsg = "Exceeded enums limit (" + maximumints + ")."; 
     log(breakmsg); 
     return; 

    } else if(min >= max) { 
    String breakmsg = "Invalid min/max values."; 
    log(breakmsg); 
    return;  

    } else { 
    //really nothing happens here 
    //some code was excluded 

Answer 1

我假設你的log（）方法是打印傳遞給它的字符串的靜態方法。

在這種情況下，如果您只想打印for循環的最後一行，請在打印前檢查以下條件。

if(idx==ints) 
log("E" + enumeration++ + ": " + randomInt);