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本文實例為大家分享了java實現查找替換功能的具體代碼，供大家參考，具體內容如下
查找
if(searchTxt.getText().equals("")){
JOptionPane.showMessageDialog(null, "查找內容不能為空！");
}else if(!searchTxt.getText().equals("")){
//searchDialog.dispose();
if(fileChoose.focus == 1){
fileChoose.tp1.requestFocus(true);
str = fileChoose.tp1.getText();
startPosition = str.indexOf(searchTxt.getText());
endPosition = startPosition + searchTxt.getText().length();
fileChoose.tp1.select(startPosition, endPosition);
newEndPosition = endPosition;
}else if(fileChoose.focus == 2){
fileChoose.tp2.requestFocus(true);
str = fileChoose.tp2.getText();
startPosition = str.indexOf(searchTxt.getText());
endPosition = startPosition + searchTxt.getText().length();
fileChoose.tp2.select(startPosition, endPosition);
newEndPosition = endPosition;
}
}
查找下一處
nextTemp = newEndPosition;
if(fileChoose.focus == 1){
strAll = fileChoose.tp1.getText();
fileChoose.tp1.select(nextTemp, strAll.length());//選中所有未查找的字符串
nextStr = fileChoose.tp1.getSelectedText();
newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;//在未查找的字符串中查找對應字符在tp1中的位置
newEndPosition = newStartPosition + searchTxt.getText().length();
fileChoose.tp1.select(newStartPosition, newEndPosition);//找到文本，選擇文本
}else if(fileChoose.focus == 2){
strAll = fileChoose.tp2.getText();
fileChoose.tp2.select(nextTemp, strAll.length());//選中所有未查找的字符串
nextStr = fileChoose.tp2.getSelectedText();
newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;//在未查找的字符串中查找對應字符在tp1中的位置
newEndPosition = newStartPosition + searchTxt.getText().length();
fileChoose.tp2.select(newStartPosition, newEndPosition);//找到文本，選擇文本
}
替換
if(fileChoose.focus == 1){
fileChoose.tp1.requestFocus(true);
str = fileChoose.tp1.getText();
startPosition = str.indexOf(searchTxt.getText());
endPosition = startPosition + searchTxt.getText().length();
fileChoose.tp1.replaceSelection(replaceTxt.getText());
newEndPosition = endPosition;
}else if(fileChoose.focus == 2){
fileChoose.tp2.requestFocus(true);
str = fileChoose.tp2.getText();
startPosition = str.indexOf(searchTxt.getText());
endPosition = startPosition + searchTxt.getText().length();
fileChoose.tp2.replaceSelection(replaceTxt.getText());
newEndPosition = endPosition;
}
替換下一處
if(fileChoose.focus == 1){
fileChoose.tp1.requestFocus(true);
nextTemp = newEndPosition;
strAll = fileChoose.tp1.getText();////////////////////////////////
fileChoose.tp1.select(nextTemp, strAll.length());/////////////////////////////
nextStr = fileChoose.tp1.getSelectedText();
newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;
newEndPosition = newStartPosition + searchTxt.getText().length();
fileChoose.tp1.select(newStartPosition, newEndPosition);
fileChoose.tp1.replaceSelection(replaceTxt.getText());
}else if(fileChoose.focus == 2){
fileChoose.tp2.requestFocus(true);
nextTemp = newEndPosition;
strAll = fileChoose.tp2.getText();
fileChoose.tp2.select(nextTemp,strAll.length());
nextStr = fileChoose.tp2.getSelectedText();
newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;
newEndPosition =newStartPosition + searchTxt.getText().length();
fileChoose.tp2.select(newStartPosition, newEndPosition);
fileChoose.tp2.replaceSelection(replaceTxt.getText());
}
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。
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