字符串截取

最新推荐文章于 2025-04-17 15:53:43 发布

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最新推荐文章于 2025-04-17 15:53:43 发布

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分类专栏： java 文章标签： java

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private void AdditionButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_AdditionButtonActionPerformed
       
       lblOutput.setText(Integer.toString(Integer.parseInt(txtNumber1.getText())+(Integer.parseInt(txtNumber2.getText()))));
    }

    private void SubtractionButtonActionPerformed(java.awt.event.ActionEvent evt) {
       
        lblOutput.setText(Integer.toString(Integer.parseInt(txtNumber1.getText())-(Integer.parseInt(txtNumber2.getText()))));
    }

    private void MultiplicationButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_MultiplicationButtonActionPerformed
       
        lblOutput.setText(Integer.toString(Integer.parseInt(txtNumber1.getText())*(Integer.parseInt(txtNumber2.getText()))));
    }

    private void DivisionButtonActionPerformed(java.awt.event.ActionEvent evt) {
        lblOutput.setText(Integer.toString(Integer.parseInt(txtNumber1.getText())/(Integer.parseInt(txtNumber2.getText()))));
    }

    private void ExponentialButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_ExponentialButtonActionPerformed
      
        lblOutput.setText(Double.toString(Math.pow(Double.parseDouble(txtNumber1.getText()),Double.parseDouble(txtNumber2.getText()))));
    }




```java
  private void DisplayButtonActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
        //获取字符串
        String sentence = txtSentence.getText();
        //第一个字符截取
        String output1=sentence.substring(4);
        //第二个字符串截取
        String output2=sentence.substring(4,10);
        //将截取的字符串设置给第一个
        txtOutput1.setText(output1);
        //将截取的字符串设置给第二个
        txtOutput2.setText(output2);