怎样解决数值转化中的丢失回题? 代码?!如果只是暂时需要转换,那就用局部的代码块来处理,把要处理的参数传进函数里 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 private void jButton13ActionPerformed(java.awt.event.ActionEvent evt) { // Add your handling code here: float y,z; y=Float.parseFloat(txtout.getText()); z=y+x; txtout.setText(String.valueOf(z)); switch (biao) { case 1: z=x+y; case 2: z=x-y; case 3: z=x*y; case 4: z=x/y; } txtout.setText(String.valueOf(z)); an=true; } private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) { // Add your handling code here: x=Float.parseFloat(txtout.getText()); txtout.setText(""); biao=4; } private void jButton14ActionPerformed(java.awt.event.ActionEvent evt) { // Add your handling code here: x=Float.parseFloat(txtout.getText()); txtout.setText(""); biao=3; } private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) { // Add your handling code here: x=Float.parseFloat(txtout.getText()); txtout.setText(""); biao=2; } private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) { // Add your handling code here: x=Float.parseFloat(txtout.getText()); txtout.setText(""); biao=1; } private void jButton16ActionPerformed(java.awt.event.ActionEvent evt) { // Add your handling code here: txtout.setText(""); }***** double的小数问题 struts2中action配置中的一点问题 JAVA获得验证码图片放入控件,怎么弄? 关于JTextArea显示的简单问题,高手指点!! 谁有O'Reilly出版的《Java Virtual Machine》的ebook? 900多页的书正在啃...痛苦!同苦的朋友进来唠叨两句! 有关于web下打印的东东吗!赐教! 问个java2核心技术例子中的一个问题(RMI) com.ibm.util.base64 是再那個包里面﹖ 匿名类 在线等待!java VM运行参数 -Xloggc 输出的内容都表示什么含义? Image 问题
// Add your handling code here:
float y,z;
y=Float.parseFloat(txtout.getText());
z=y+x;
txtout.setText(String.valueOf(z));
switch (biao) {
case 1:
z=x+y;
case 2:
z=x-y;
case 3:
z=x*y;
case 4:
z=x/y;
}
txtout.setText(String.valueOf(z));
an=true;
} private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) {
// Add your handling code here:
x=Float.parseFloat(txtout.getText());
txtout.setText("");
biao=4;
} private void jButton14ActionPerformed(java.awt.event.ActionEvent evt) {
// Add your handling code here:
x=Float.parseFloat(txtout.getText());
txtout.setText("");
biao=3;
} private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) {
// Add your handling code here:
x=Float.parseFloat(txtout.getText());
txtout.setText("");
biao=2;
} private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {
// Add your handling code here:
x=Float.parseFloat(txtout.getText());
txtout.setText("");
biao=1;
} private void jButton16ActionPerformed(java.awt.event.ActionEvent evt) {
// Add your handling code here:
txtout.setText("");
}*****